Simplistic Mosfet HV Shunt Regs - Page 169 - diyAudio
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Old 12th March 2011, 12:08 PM   #1681
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Hi Salas,

for my Tube-I-zator i have two possibilities to config my psu:


Click the image to open in full size.


Witch of the two would you prefer?
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Old 12th March 2011, 12:37 PM   #1682
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I'm not salas, but the N.1 for sure!
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Old 12th March 2011, 12:47 PM   #1683
Salas is offline Salas  Greece
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I would agree.
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Old 12th March 2011, 01:32 PM   #1684
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Thanks, thats the way i had in my mind
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Old 28th March 2011, 10:05 AM   #1685
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Hello all.
I wish try the SSHV in a SE power amp.
The +B is 330V at 86ma
You could suggest me the inicial value for R1 for (86mA+25mA) 111mA? Some other advice?
Thank you in advance,
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Old 28th March 2011, 10:44 AM   #1686
Salas is offline Salas  Greece
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SE power amp may upset this regulator because of the output transformer's strong inductive load. It has been tried on smaller headphones amplifiers, can't say for this, its your test. 3 Leds of 1.9V drop each, R1=18R 2W, R3=67K 5W. 350VDC input. R4 120K make from 240K//240K 2W each. MJE350 may hold at 330V out, test stronger Vmax PNP if not.
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Old 28th March 2011, 11:23 AM   #1687
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Default I will try

Thank you for reply Salas.
I will try...
Is better if use one reg for de output stage? is a 65mA load...

Alberto.
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Old 28th March 2011, 12:54 PM   #1688
Salas is offline Salas  Greece
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The input stage will benefit the most from a regulator. If it can not cooperate for the amp as a whole, run it lower current and use it for the input stage only. So it will not be left without a task if it can't serve for the power stage stably.
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Old 29th March 2011, 06:13 AM   #1689
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Default 150v for 26

Hi Salas,

I'm planing a new 26 pre amp and would love to add 2 shunt regs for separated channels before the OPT. Please take a look at the attached and do advise if there is anything I have to pay more attention on.
Thanks

Albert
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Old 29th March 2011, 06:22 AM   #1690
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Sorry, the attachment didn't go with it.
Basically I follow the new version with some changes. R1-56R, R3/56K and R5-100k. I go with CLC and split into 2 RC 180v to the regs. I'm aiming at 150v 9 mA.

Albert
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