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Old 12th October 2012, 01:17 PM   #3271
Salas is online now Salas  Greece
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Remove one 10K, now the former bleeder is part of the dummy and you are near 4K eventually.
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Old 12th October 2012, 01:23 PM   #3272
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Do you mean remove one 10K and measure again before deciding on the value of the bleeder?? Or remove one 10K, and ready to connect to test the SSHV2 ??
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Old 12th October 2012, 01:35 PM   #3273
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If you will test with the bleeder installed plus one 10K that will indicate 42mA capability at the voltage it will settle. If that will be 285V or more, remove both resistors, connect the reg and set it to 40mA. install a 150K 2W bleeder if you got or get one to install later where the 22K was for capacitor bank exposed legs to be HV safe after turn off.
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Old 12th October 2012, 01:43 PM   #3274
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Understand....thankyou Salas.....can only work on this again early next week....will get back to you then....cheers.....
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Old 13th October 2012, 11:54 AM   #3275
widi is offline widi  Spain
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Hi all,
First of all apologies for the inconvenience and my little knowledge, I can have someone help Simplistic Mosfet HV connect Shunt Regs, V- of the power supply of my preamp. attached a picture.
I to place two Mosfet HV Shunt Regs, in my PSU but not as Mosfet HV Shunt install Regs for V-.
Thanks in advance.
regards
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File Type: jpg My preamp PSU.jpg (22.1 KB, 173 views)
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Old 13th October 2012, 12:29 PM   #3276
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What kind you have made, SSHV1, 2, or nothing yet? There are older posts on how to mirror SSHV1 for minus polarity or in how to use two positive polarity regulators for (+) and (-).
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File Type: png SSHV1_NEG.png (19.3 KB, 161 views)
File Type: jpg PSU Symmetry 2 x Positive.jpg (113.4 KB, 163 views)
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Old 13th October 2012, 12:50 PM   #3277
widi is offline widi  Spain
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Quote:
Originally Posted by Salas View Post
What kind you have made, SSHV1, 2, or nothing yet? There are older posts on how to mirror SSHV1 for minus polarity or in how to use two positive polarity regulators for (+) and (-).
.

Thanks for the help Mr. Salas.
I have not done anything, but the configuration of the new power supply for my preamp is like the image attached.
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File Type: gif dual_psu for my preamp.gif (1.9 KB, 149 views)
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Old 13th October 2012, 01:06 PM   #3278
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You can either make one positive and one negative SSHV point to point and use your now configuration, or make two positive SSHV2 from ready PCBs and convert to the configuration of my second posted picture.
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Old 13th October 2012, 01:35 PM   #3279
widi is offline widi  Spain
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Quote:
Originally Posted by Salas View Post
You can either make one positive and one negative SSHV point to point and use your now configuration, or make two positive SSHV2 from ready PCBs and convert to the configuration of my second posted picture.
Thanks again Mr. Salas.
Will use the new PSU, and two positive SSHV2
One last question.
The transformer data I will use it: Hammond Model 260G, 175 VA power, SEC 275-0-275, 200 milliamps.
You would advise me to this transformer for my new PSU?.

Best Regards,
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Old 13th October 2012, 01:40 PM   #3280
Salas is online now Salas  Greece
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Advise is you will need a transformer with two discrete same secondaries, i.e. 4 wires not 3 to make the two positive regs configuration. Milliamps and Volts is whatever your application specifies plus 20mA for the regs. Double that to be royal if you can. Keep in mind about AC*1.33 real DC value to expect after rectification. Make sure it will allow 20V headroom to the regulators.
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