Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

My First Power Supply
My First Power Supply
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 11th November 2010, 06:29 AM   #1
popilin is offline popilin  Argentina
diyAudio Member
popilin's Avatar
Join Date: Oct 2010
Location: Traslasierra
Default My First Power Supply

Here is a PSU for Valve Amplifiers, 12V<+B<600V
Choose R204 to flow about 5mA through the LM385 2.5 (Common Zenner are very noissy) R206,R207,R208 to flow 5mA through the opto coupler and have 5V at pin 1, R209,R210,P201 to flow 1mA
The time constant R204*C207 (Aprox 10s) is made smaller than filament delay (Aprox 30s) this acts as a soft start
Output Voltage is given by

+B = Vreff * ( P201+R209+R210 ) / P201

For TL431 Vreff = 2.5V

The second circuit is a time delay for heating the Valves Before +B is applied

Attached Files
File Type: pdf PSU1.pdf (195.3 KB, 292 views)
I do not suffer from insanity, I enjoy every minute of it. - Edgar Allan Poe
He has the most who is most content with the least. - Diogenes of Sinope

Last edited by popilin; 2nd June 2012 at 12:56 AM.
  Reply With Quote
Old 18th March 2012, 06:46 PM   #2
dady is offline dady  Europe
diyAudio Member
dady's Avatar
Join Date: Oct 2002
Location: There, somewhere...
Send a message via MSN to dady My First Power Supply
Capo contribuyente a la ciencia internacional, es mi amigo Popilín de Bachín.
Head and Braininess Friend of the international science. This is my Friend Popilin of bachín. Congratulations for that electronic circuit diagram.
Esteban Bikić
  Reply With Quote
Old 18th March 2012, 08:05 PM   #3
popilin is offline popilin  Argentina
diyAudio Member
popilin's Avatar
Join Date: Oct 2010
Location: Traslasierra
Hi dady
Thank you for your comments, I do not deserve.
As a little advice try 2SK2671 instead of IRFBC40 and you can work until 900V at the input cap.
Best regards from Argentina
  Reply With Quote


My First Power SupplyHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
U.S.AMPS 100HCA Power Supply Turns on 3 secs then looses Power Kip McGee Car Audio 8 29th September 2010 04:56 AM
DIY Audio Alchemy Power Station 2 Power supply PSU with case roscoeiii Swap Meet 2 29th May 2010 06:51 PM
LTspice tool for power amp power supply component evaluation andy_c Software Tools 2 23rd August 2009 05:10 PM
Rockford Power 500.2 Amp Troubleshooting power supply. kds9591 Car Audio 6 3rd September 2008 03:09 AM
heater supply (xformer specs are 6.3V 2.5A) as supply for a power LED? jarthel Tubes / Valves 10 21st July 2003 01:30 PM

New To Site? Need Help?

All times are GMT. The time now is 11:56 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio