Didn't I tell you? I also told you I'd use the 741 if I were you. You'll lose nothing noticeable, IMHO.
Hi Ikoflexer
I tend to agree with you, with 741 the imaging and midrange is better when compared with AD817AN
Goh
Hi Algar,
i take it that the values you have measured here were for the 656, correct?
http://www.diyaudio.com/forums/showpost.php?p=1616403&postcount=33
Greetings
i take it that the values you have measured here were for the 656, correct?
http://www.diyaudio.com/forums/showpost.php?p=1616403&postcount=33
Greetings
I still receive some requests for PCB. Please send me a private email to bergeron.syl@videotron.qc.ca. I may be able to help you for a few boards.
Thanks...
SB
Thanks...
SB
Read the documentation, you can use an external tube control shunt element for higher power load. I never tried it myself, but it can be done. Can you select a suitable tube for your application, I don't know either.Maybe someone else can help you on that. Anyway the regulator documentation is a good start.
Hi. I'm ordering from Europe FET 2SK369BL for my own use. They are 0.56 EUR each.
I may as well order some for those interested for the HV Regulator PCB.
Please let me know if you want the FET? You'll pay only my final cost, delivered to Canada. You can pay for it with the final shipping cost...
I would like to order the FET this week, so by the week end, I'll close the offer.
Let me know.
Thanks...
I may as well order some for those interested for the HV Regulator PCB.
Please let me know if you want the FET? You'll pay only my final cost, delivered to Canada. You can pay for it with the final shipping cost...
I would like to order the FET this week, so by the week end, I'll close the offer.
Let me know.
Thanks...
Tested my two regulators today
At last I have done the checking test on my two cards .
They was soldered and ready 10 month ago ., (almost finished at post #178).
But I havent really got the time and was also a bit afraid of what the stress and concentration this function test would do on me
I mentioned back at #178 I would try a National Semi LME49710 OP Amp. I did and it worked OK. Less then 2mV hash on scope.
I also did one card with an SMD OPA656. All DC levels measured the same and the regulator also worked OK i thought, until I measured and looked at the scope. I have a perfect 63MHz sinewave of 130mV ripple (RMS) So we are a few having radio transmitters instead of regulators, allthough mine has a weak oscillation.
I havent "listened" to any of them yet. I will try to get rid of the oscilation on the OPA656 one first. C13 maybe? I have not checked the T5 CCS. It should be more then 3mA. Could this have something to do with the small oscillation?
Anyway. More of you have to get your cards ready so that we can compare our results.
At last I have done the checking test on my two cards .
They was soldered and ready 10 month ago ., (almost finished at post #178).
But I havent really got the time and was also a bit afraid of what the stress and concentration this function test would do on me
I mentioned back at #178 I would try a National Semi LME49710 OP Amp. I did and it worked OK. Less then 2mV hash on scope.
I also did one card with an SMD OPA656. All DC levels measured the same and the regulator also worked OK i thought, until I measured and looked at the scope. I have a perfect 63MHz sinewave of 130mV ripple (RMS) So we are a few having radio transmitters instead of regulators, allthough mine has a weak oscillation.
I havent "listened" to any of them yet. I will try to get rid of the oscilation on the OPA656 one first. C13 maybe? I have not checked the T5 CCS. It should be more then 3mA. Could this have something to do with the small oscillation?
Anyway. More of you have to get your cards ready so that we can compare our results.
Last edited:
- Home
- Group Buys
- HV Shunt Regulator PCB