Quad II Switch Mode PSU - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs 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

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 6th November 2011, 01:58 PM   #1
diyAudio Member
Join Date: Jan 2010
Default Quad II Switch Mode PSU

Hi, Another Quad II with a mains transformer shorted HT. I have previously tried rewinding, but without much success (i got bored counting the turns and getting the tar off). So as I was just repairing a a modern 300 watt Wharfedale with a SMPs when it occured to me that it shouldnt be too difficult to build a 360vdc and 6.3v(dc) smp inside the existing Quad transformer can. So I have reserched the forums and cannot find anything directly relating to this, I realise that there are a lot of problems with the noise from the smp and the ht coming on too soon which would need resolving.

So has anyone done this?
  Reply With Quote
Old 6th November 2011, 02:54 PM   #2
diyAudio Member
Join Date: Apr 2010
It sounds perfectly feasible. You could overcome the instant HT problem by leaving the existing GZ32 in place and feeding the SMPS supply to both anodes. You would then need to supply 5 volts as well.
  Reply With Quote


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Switch mode PSU argonrepublic Power Supplies 2 18th October 2009 10:08 PM
Switch-mode PSU for tube heaters? deltavektor Tubes / Valves 9 31st October 2008 08:07 AM
Using a spdt switch to select between triode mode and pentode mode on a guitar amp. G Instruments and Amps 19 15th March 2006 09:15 AM
Standby switch for Quad II? Zombie Tubes / Valves 13 13th March 2003 11:20 AM
Troublesome Switch mode PSU stigla Solid State 9 23rd June 2002 12:28 PM

New To Site? Need Help?

All times are GMT. The time now is 07:15 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2