Salas I have hum with the PSU attached.
merlin el mago Member Joined 2009 Paid Member 2017-03-13 7:46 pm #2,821 2017-03-13 7:46 pm #2,821 Salas I have hum with the PSU attached. Attachments valve itch psu 250VAC 80mA.png 83.5 KB · Views: 241 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-13 11:09 pm #2,822 2017-03-13 11:09 pm #2,822 Must try more resistance I guess (if its not a ground loop hum) ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 7:40 am #2,823 2017-03-14 7:40 am #2,823 If I use more resistance SSHV2 can't regulate to 300VDC. ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 11:54 am #2,824 2017-03-14 11:54 am #2,824 How much more R in the CRC it takes to go 310-320V raw with your transfo? Maybe having a choke in hand to try there instead? Or lower the CCS setting a little. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 1:53 pm #2,825 2017-03-14 1:53 pm #2,825 47 ohms for 320V, I don't have any choke at hand. ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 1:56 pm #2,826 2017-03-14 1:56 pm #2,826 Tight voltage space excludes a bigger R choice. Having any low DCR choke to test? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:01 pm #2,827 2017-03-14 2:01 pm #2,827 No. ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:08 pm #2,828 2017-03-14 2:08 pm #2,828 Is there 100Hz ripple on the phono rail that can be seen on the scope? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:18 pm #2,829 2017-03-14 2:18 pm #2,829 I have to check, let me a little of time, what sets have I to do at the scope to see the 100Hz ripple? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:21 pm #2,830 2017-03-14 2:21 pm #2,830 AC scope input, probe 1/10, 1mS scan, should do. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:24 pm #2,831 2017-03-14 2:24 pm #2,831 OK thanks. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:31 pm #2,832 2017-03-14 4:31 pm #2,832 Salas real load or dummy load? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:38 pm #2,833 2017-03-14 4:38 pm #2,833 For dummy load I have near 7K5 for 300V 40mA, 6K8 and 8.K2 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 4:45 pm #2,834 2017-03-14 4:45 pm #2,834 Real load ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:47 pm #2,835 2017-03-14 4:47 pm #2,835 ok ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Source & Line Analogue Source Valve Itch phono Top Bottom
Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-13 11:09 pm #2,822 2017-03-13 11:09 pm #2,822 Must try more resistance I guess (if its not a ground loop hum) ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 7:40 am #2,823 2017-03-14 7:40 am #2,823 If I use more resistance SSHV2 can't regulate to 300VDC. ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 11:54 am #2,824 2017-03-14 11:54 am #2,824 How much more R in the CRC it takes to go 310-320V raw with your transfo? Maybe having a choke in hand to try there instead? Or lower the CCS setting a little. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 1:53 pm #2,825 2017-03-14 1:53 pm #2,825 47 ohms for 320V, I don't have any choke at hand. ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 1:56 pm #2,826 2017-03-14 1:56 pm #2,826 Tight voltage space excludes a bigger R choice. Having any low DCR choke to test? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:01 pm #2,827 2017-03-14 2:01 pm #2,827 No. ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:08 pm #2,828 2017-03-14 2:08 pm #2,828 Is there 100Hz ripple on the phono rail that can be seen on the scope? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:18 pm #2,829 2017-03-14 2:18 pm #2,829 I have to check, let me a little of time, what sets have I to do at the scope to see the 100Hz ripple? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:21 pm #2,830 2017-03-14 2:21 pm #2,830 AC scope input, probe 1/10, 1mS scan, should do. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:24 pm #2,831 2017-03-14 2:24 pm #2,831 OK thanks. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:31 pm #2,832 2017-03-14 4:31 pm #2,832 Salas real load or dummy load? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:38 pm #2,833 2017-03-14 4:38 pm #2,833 For dummy load I have near 7K5 for 300V 40mA, 6K8 and 8.K2 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 4:45 pm #2,834 2017-03-14 4:45 pm #2,834 Real load ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:47 pm #2,835 2017-03-14 4:47 pm #2,835 ok ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Source & Line Analogue Source Valve Itch phono Top Bottom
merlin el mago Member Joined 2009 Paid Member 2017-03-14 7:40 am #2,823 2017-03-14 7:40 am #2,823 If I use more resistance SSHV2 can't regulate to 300VDC. ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 11:54 am #2,824 2017-03-14 11:54 am #2,824 How much more R in the CRC it takes to go 310-320V raw with your transfo? Maybe having a choke in hand to try there instead? Or lower the CCS setting a little. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 1:53 pm #2,825 2017-03-14 1:53 pm #2,825 47 ohms for 320V, I don't have any choke at hand. ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 1:56 pm #2,826 2017-03-14 1:56 pm #2,826 Tight voltage space excludes a bigger R choice. Having any low DCR choke to test? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:01 pm #2,827 2017-03-14 2:01 pm #2,827 No. ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:08 pm #2,828 2017-03-14 2:08 pm #2,828 Is there 100Hz ripple on the phono rail that can be seen on the scope? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:18 pm #2,829 2017-03-14 2:18 pm #2,829 I have to check, let me a little of time, what sets have I to do at the scope to see the 100Hz ripple? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:21 pm #2,830 2017-03-14 2:21 pm #2,830 AC scope input, probe 1/10, 1mS scan, should do. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:24 pm #2,831 2017-03-14 2:24 pm #2,831 OK thanks. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:31 pm #2,832 2017-03-14 4:31 pm #2,832 Salas real load or dummy load? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:38 pm #2,833 2017-03-14 4:38 pm #2,833 For dummy load I have near 7K5 for 300V 40mA, 6K8 and 8.K2 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 4:45 pm #2,834 2017-03-14 4:45 pm #2,834 Real load ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:47 pm #2,835 2017-03-14 4:47 pm #2,835 ok ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Source & Line Analogue Source Valve Itch phono Top Bottom
Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 11:54 am #2,824 2017-03-14 11:54 am #2,824 How much more R in the CRC it takes to go 310-320V raw with your transfo? Maybe having a choke in hand to try there instead? Or lower the CCS setting a little. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 1:53 pm #2,825 2017-03-14 1:53 pm #2,825 47 ohms for 320V, I don't have any choke at hand. ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 1:56 pm #2,826 2017-03-14 1:56 pm #2,826 Tight voltage space excludes a bigger R choice. Having any low DCR choke to test? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:01 pm #2,827 2017-03-14 2:01 pm #2,827 No. ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:08 pm #2,828 2017-03-14 2:08 pm #2,828 Is there 100Hz ripple on the phono rail that can be seen on the scope? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:18 pm #2,829 2017-03-14 2:18 pm #2,829 I have to check, let me a little of time, what sets have I to do at the scope to see the 100Hz ripple? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:21 pm #2,830 2017-03-14 2:21 pm #2,830 AC scope input, probe 1/10, 1mS scan, should do. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:24 pm #2,831 2017-03-14 2:24 pm #2,831 OK thanks. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:31 pm #2,832 2017-03-14 4:31 pm #2,832 Salas real load or dummy load? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:38 pm #2,833 2017-03-14 4:38 pm #2,833 For dummy load I have near 7K5 for 300V 40mA, 6K8 and 8.K2 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 4:45 pm #2,834 2017-03-14 4:45 pm #2,834 Real load ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:47 pm #2,835 2017-03-14 4:47 pm #2,835 ok ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Source & Line Analogue Source Valve Itch phono Top Bottom
How much more R in the CRC it takes to go 310-320V raw with your transfo? Maybe having a choke in hand to try there instead? Or lower the CCS setting a little.
merlin el mago Member Joined 2009 Paid Member 2017-03-14 1:53 pm #2,825 2017-03-14 1:53 pm #2,825 47 ohms for 320V, I don't have any choke at hand. ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 1:56 pm #2,826 2017-03-14 1:56 pm #2,826 Tight voltage space excludes a bigger R choice. Having any low DCR choke to test? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:01 pm #2,827 2017-03-14 2:01 pm #2,827 No. ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:08 pm #2,828 2017-03-14 2:08 pm #2,828 Is there 100Hz ripple on the phono rail that can be seen on the scope? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:18 pm #2,829 2017-03-14 2:18 pm #2,829 I have to check, let me a little of time, what sets have I to do at the scope to see the 100Hz ripple? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:21 pm #2,830 2017-03-14 2:21 pm #2,830 AC scope input, probe 1/10, 1mS scan, should do. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:24 pm #2,831 2017-03-14 2:24 pm #2,831 OK thanks. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:31 pm #2,832 2017-03-14 4:31 pm #2,832 Salas real load or dummy load? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:38 pm #2,833 2017-03-14 4:38 pm #2,833 For dummy load I have near 7K5 for 300V 40mA, 6K8 and 8.K2 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 4:45 pm #2,834 2017-03-14 4:45 pm #2,834 Real load ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:47 pm #2,835 2017-03-14 4:47 pm #2,835 ok ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Source & Line Analogue Source Valve Itch phono Top Bottom
Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 1:56 pm #2,826 2017-03-14 1:56 pm #2,826 Tight voltage space excludes a bigger R choice. Having any low DCR choke to test? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:01 pm #2,827 2017-03-14 2:01 pm #2,827 No. ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:08 pm #2,828 2017-03-14 2:08 pm #2,828 Is there 100Hz ripple on the phono rail that can be seen on the scope? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:18 pm #2,829 2017-03-14 2:18 pm #2,829 I have to check, let me a little of time, what sets have I to do at the scope to see the 100Hz ripple? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:21 pm #2,830 2017-03-14 2:21 pm #2,830 AC scope input, probe 1/10, 1mS scan, should do. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:24 pm #2,831 2017-03-14 2:24 pm #2,831 OK thanks. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:31 pm #2,832 2017-03-14 4:31 pm #2,832 Salas real load or dummy load? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:38 pm #2,833 2017-03-14 4:38 pm #2,833 For dummy load I have near 7K5 for 300V 40mA, 6K8 and 8.K2 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 4:45 pm #2,834 2017-03-14 4:45 pm #2,834 Real load ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:47 pm #2,835 2017-03-14 4:47 pm #2,835 ok ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Source & Line Analogue Source Valve Itch phono Top Bottom
merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:01 pm #2,827 2017-03-14 2:01 pm #2,827 No. ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:08 pm #2,828 2017-03-14 2:08 pm #2,828 Is there 100Hz ripple on the phono rail that can be seen on the scope? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:18 pm #2,829 2017-03-14 2:18 pm #2,829 I have to check, let me a little of time, what sets have I to do at the scope to see the 100Hz ripple? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:21 pm #2,830 2017-03-14 2:21 pm #2,830 AC scope input, probe 1/10, 1mS scan, should do. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:24 pm #2,831 2017-03-14 2:24 pm #2,831 OK thanks. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:31 pm #2,832 2017-03-14 4:31 pm #2,832 Salas real load or dummy load? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:38 pm #2,833 2017-03-14 4:38 pm #2,833 For dummy load I have near 7K5 for 300V 40mA, 6K8 and 8.K2 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 4:45 pm #2,834 2017-03-14 4:45 pm #2,834 Real load ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:47 pm #2,835 2017-03-14 4:47 pm #2,835 ok ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Source & Line Analogue Source Valve Itch phono Top Bottom
Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:08 pm #2,828 2017-03-14 2:08 pm #2,828 Is there 100Hz ripple on the phono rail that can be seen on the scope? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:18 pm #2,829 2017-03-14 2:18 pm #2,829 I have to check, let me a little of time, what sets have I to do at the scope to see the 100Hz ripple? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:21 pm #2,830 2017-03-14 2:21 pm #2,830 AC scope input, probe 1/10, 1mS scan, should do. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:24 pm #2,831 2017-03-14 2:24 pm #2,831 OK thanks. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:31 pm #2,832 2017-03-14 4:31 pm #2,832 Salas real load or dummy load? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:38 pm #2,833 2017-03-14 4:38 pm #2,833 For dummy load I have near 7K5 for 300V 40mA, 6K8 and 8.K2 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 4:45 pm #2,834 2017-03-14 4:45 pm #2,834 Real load ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:47 pm #2,835 2017-03-14 4:47 pm #2,835 ok ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Source & Line Analogue Source Valve Itch phono Top Bottom
merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:18 pm #2,829 2017-03-14 2:18 pm #2,829 I have to check, let me a little of time, what sets have I to do at the scope to see the 100Hz ripple? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:21 pm #2,830 2017-03-14 2:21 pm #2,830 AC scope input, probe 1/10, 1mS scan, should do. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:24 pm #2,831 2017-03-14 2:24 pm #2,831 OK thanks. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:31 pm #2,832 2017-03-14 4:31 pm #2,832 Salas real load or dummy load? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:38 pm #2,833 2017-03-14 4:38 pm #2,833 For dummy load I have near 7K5 for 300V 40mA, 6K8 and 8.K2 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 4:45 pm #2,834 2017-03-14 4:45 pm #2,834 Real load ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:47 pm #2,835 2017-03-14 4:47 pm #2,835 ok ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Source & Line Analogue Source Valve Itch phono Top Bottom
I have to check, let me a little of time, what sets have I to do at the scope to see the 100Hz ripple?
Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 2:21 pm #2,830 2017-03-14 2:21 pm #2,830 AC scope input, probe 1/10, 1mS scan, should do. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:24 pm #2,831 2017-03-14 2:24 pm #2,831 OK thanks. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:31 pm #2,832 2017-03-14 4:31 pm #2,832 Salas real load or dummy load? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:38 pm #2,833 2017-03-14 4:38 pm #2,833 For dummy load I have near 7K5 for 300V 40mA, 6K8 and 8.K2 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 4:45 pm #2,834 2017-03-14 4:45 pm #2,834 Real load ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:47 pm #2,835 2017-03-14 4:47 pm #2,835 ok ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Source & Line Analogue Source Valve Itch phono Top Bottom
merlin el mago Member Joined 2009 Paid Member 2017-03-14 2:24 pm #2,831 2017-03-14 2:24 pm #2,831 OK thanks. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:31 pm #2,832 2017-03-14 4:31 pm #2,832 Salas real load or dummy load? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:38 pm #2,833 2017-03-14 4:38 pm #2,833 For dummy load I have near 7K5 for 300V 40mA, 6K8 and 8.K2 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 4:45 pm #2,834 2017-03-14 4:45 pm #2,834 Real load ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:47 pm #2,835 2017-03-14 4:47 pm #2,835 ok ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Source & Line Analogue Source Valve Itch phono Top Bottom
merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:31 pm #2,832 2017-03-14 4:31 pm #2,832 Salas real load or dummy load? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:38 pm #2,833 2017-03-14 4:38 pm #2,833 For dummy load I have near 7K5 for 300V 40mA, 6K8 and 8.K2 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 4:45 pm #2,834 2017-03-14 4:45 pm #2,834 Real load ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:47 pm #2,835 2017-03-14 4:47 pm #2,835 ok ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Source & Line Analogue Source Valve Itch phono Top Bottom
merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:38 pm #2,833 2017-03-14 4:38 pm #2,833 For dummy load I have near 7K5 for 300V 40mA, 6K8 and 8.K2 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 4:45 pm #2,834 2017-03-14 4:45 pm #2,834 Real load ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:47 pm #2,835 2017-03-14 4:47 pm #2,835 ok ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Source & Line Analogue Source Valve Itch phono
Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 4:45 pm #2,834 2017-03-14 4:45 pm #2,834 Real load ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:47 pm #2,835 2017-03-14 4:47 pm #2,835 ok ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Source & Line Analogue Source Valve Itch phono
merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:47 pm #2,835 2017-03-14 4:47 pm #2,835 ok ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
merlin el mago Member Joined 2009 Paid Member 2017-03-14 4:57 pm #2,836 2017-03-14 4:57 pm #2,836 Warm up the Itch before to make measurements. ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:17 pm #2,837 2017-03-14 5:17 pm #2,837 I don't see nothing! Scope set probe 1X10 5mV/cm 1ms. Attachments WP_20170314_002[1].jpg 384.9 KB · Views: 176 ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:21 pm #2,838 2017-03-14 5:21 pm #2,838 So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed? ••• More options Share merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
So not power related. No ripple. If you got some harmonic noise its a ground loop or an interference. But you were not talking about that noise last time you reworked it to lower the input capacitance very successfully. What changed?
merlin el mago Member Joined 2009 Paid Member 2017-03-14 5:28 pm #2,839 2017-03-14 5:28 pm #2,839 Possible the 22uF in parallel with 1uF at the SSHV2 input? ••• More options Share Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share Prev 1 … Go to page Go 140 141 142 143 144 … Go to page Go 184 Next First Prev 142 of 184 Go to page Go Next Last Show hidden low quality content You must log in or register to reply here.
Salas diyAudio Chief Moderator Joined 2002 Paid Member 2017-03-14 5:31 pm #2,840 2017-03-14 5:31 pm #2,840 But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale. ••• More options Share
But nothing bad passes in the rail. Unless there is something very high in frequency. Sweep the timescale.
![WP_20170314_002[1].jpg](/community/data/attachments/560/560847-ae5c9b92d83ab5e5b86611015b690960.jpg)