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

12V AC to 6.3v DC simple supply for idiots
12V AC to 6.3v DC simple supply for idiots
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
Reply
 
Thread Tools Search this Thread
Old 13th September 2009, 09:47 PM   #11
coldcathode is offline coldcathode  United States
diyAudio Member
 
coldcathode's Avatar
 
Join Date: Jan 2009
One "DOWN" and dirty, completely idiot proof and relatively cheap way to go would be look on Epay for a 12.6V "Laptop" powersupply. Wire the heaters of the PP pairs in Series and the 2 CG7's in series. Parallel the 3 pairs and put an input jack on the chassis.

Here's one

You can put the supply far enough away from the chassis so there is no noise. That one in the link is 4Amps plenty of power for the filaments.
  Reply With Quote
Old 14th September 2009, 01:53 AM   #12
aardvarkash10 is offline aardvarkash10  New Zealand
diyAudio Member
 
aardvarkash10's Avatar
 
Join Date: Mar 2007
Location: Auckland, NZ
Default why DC Drew?

are you having issues with noise? I just completed my EL36/6CM5 p-p last night (well, almost completed... one channel still needs to be tweeked...)

It uses a 24VAC transformer feeding the output tubes (4 x 6.3 @ 1.2A) and the voltage amps (6J7) + phase splitters (6J5) (4 x 6.3 @ 0.3A) as two series chains.

At the moment it is running bare - I will probably virtual centre-tap it later on, but so far no noise issues and it has made dealing with the 1.2A heater current in the EL36 a non-issue.

JMTCW...
__________________
"It may not be easy for some to not hear differences, even if they are not there." - Vacuphile,
  Reply With Quote
Old 14th September 2009, 02:06 AM   #13
DrewP is offline DrewP
diyAudio Member
 
Join Date: Jan 2002
Location: Canberra, Australia
Quote:
Originally Posted by aardvarkash10 View Post
are you having issues with noise? I just completed my EL36/6CM5 p-p last night (well, almost completed... one channel still needs to be tweeked...)

It uses a 24VAC transformer feeding the output tubes (4 x 6.3 @ 1.2A) and the voltage amps (6J7) + phase splitters (6J5) (4 x 6.3 @ 0.3A) as two series chains.

At the moment it is running bare - I will probably virtual centre-tap it later on, but so far no noise issues and it has made dealing with the 1.2A heater current in the EL36 a non-issue.

JMTCW...
Not yet, still at the getting bits together stage. Had been advised not to AC heat the 6CG7's. Happy to go with the original AC heated design and take my chances with a retrofit later on if needed...

You've talked me into it, will series the heaters and run off the 12v AC supply first up and we'll see how things go...
  Reply With Quote

Reply


12V AC to 6.3v DC simple supply for idiotsHide 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
idiots guide to impedance + spdif measurement woodturner-fran Digital Line Level 7 20th October 2008 06:04 PM
Simple DC Heater Supply d1camero Tubes / Valves 9 19th October 2007 10:33 PM
Idiots question on resistors. Wella Tubes / Valves 3 8th July 2003 11:49 AM


New To Site? Need Help?

All times are GMT. The time now is 06:47 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki