The Right Tube & TRannie - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

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
Reply
 
Thread Tools Search this Thread
Old 19th January 2012, 05:12 PM   #1
diyAudio Member
 
IRON AND GLASS's Avatar
 
Join Date: Dec 2011
Default The Right Tube & TRannie

DIY Friends, If You Please, A Question: What's the the most cost affective brand & model of transformer that will deliver an adequate heater supply to (8) 6AS7's rated @ 6.3V - 2.5A. I do not want to to use or waste any other robust trannies that I already have and need for other projects. So if You would Please bestow some of Your Prowess upon Me, I will be most grateful. Your help would most certainly be appreciated. Thanks
  Reply With Quote
Old 19th January 2012, 05:18 PM   #2
diyAudio Member
 
Join Date: May 2009
Hi ING, transport for transformers is costly, so it'll depend on your location I expect
  Reply With Quote
Old 19th January 2012, 05:27 PM   #3
diyAudio Member
 
Join Date: Mar 2003
Location: Zürich
Indeed, shipping is expensive, so you can better look what you can get locally. Still, 6,3V transformers are generally harder to find than for example 12V or 24V transformers, so you can consider wiring the 6AS7 in a series/parallel combination to be fed from 12V or 24V.
__________________
my surname is indeed 'de Best': neither misspelling nor snobbism! Ask SY!
  Reply With Quote
Old 19th January 2012, 07:23 PM   #4
diyAudio Member
 
the_manta's Avatar
 
Join Date: Nov 2006
Location: Munich, Bavaria
New 12V 12.5A DC Universal Regulated Switching Power Supply | eBay

You can adjust the output in the 10% range. So 12.6V should be possible. Otherwise you can still reengineer the secondary side and adjust the voltage divider for the error amp for 12.6V output.

$8.99 is really hard to beat. You asked for it...
__________________
Терпенье и труд все перетрут
  Reply With Quote
Old 19th January 2012, 08:19 PM   #5
ryuji is offline ryuji  United States
diyAudio Member
 
Join Date: Feb 2011
Location: massachusetts
Quote:
Originally Posted by the_manta View Post
New 12V 12.5A DC Universal Regulated Switching Power Supply | eBay

You can adjust the output in the 10% range. So 12.6V should be possible. Otherwise you can still reengineer the secondary side and adjust the voltage divider for the error amp for 12.6V output.

$8.99 is really hard to beat. You asked for it...
I own the 15A version, it scales to 13v plus change. Reliable too. Haven't used it in new amp design but it worked great in old one
  Reply With Quote

Reply


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
The Right Cost Affective Trannie IRON AND GLASS Power Supplies 2 20th January 2012 05:00 AM
power trannie then_dude Power Supplies 2 30th May 2007 03:02 PM
Passive I/V Trannie for TDA1541? fred76 Digital Source 0 10th February 2005 11:59 AM
Wanted---Power trannie for Heathkit W-5M amp RADIOLEE Swap Meet 0 4th December 2003 11:23 PM
surplus Trannie pinkmouse Parts 3 14th October 2002 10:37 PM


New To Site? Need Help?

All times are GMT. The time now is 04:06 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2