Source for 2.5VCT 5A filament transformers - 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 15th January 2009, 07:49 PM   #1
diyAudio Member
dsavitsk's Avatar
Join Date: Jan 2005
Location: Hartford
Default Source for 2.5VCT 5A filament transformers

I am looking for filament transformers for a push pull 2A3 amp. Hammond makes a 2.5V 6A (166Q2), but as it is Hammond, and as they are spec'd for 115V primaries, and as they are 6A transformers, they are almost certainly going to run too hot. Anyone know an off the shelf transformer that will work? Do I need to go the E-P route?
  Reply With Quote
Old 15th January 2009, 08:02 PM   #2
diyAudio Member
Join Date: Mar 2003
Location: Zürich
I am sure you thought about this option, but I will throw it in anyway: get a toroidal and put some extra secondaries on it!
my surname is indeed 'de Best': neither misspelling nor snobbism! Ask SY!
  Reply With Quote
Old 15th January 2009, 08:39 PM   #3
kmaier is offline kmaier  United States
diyAudio Member
kmaier's Avatar
Join Date: Jul 2007
One interesting arrangement was placing a small pilot lamp in series with the 115VAC primary winding for the Hammond 166L2 to reduce the voltage as shown here:

Could easily adapt this to the 166Q2 as well.

Regards, KM
... just because you're paranoid, it doesn't mean they're not after you...
  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
Weird old power transformers (filament, SS and tube) - $7 each! pjanda1 Swap Meet 6 29th March 2010 04:17 PM
Plate and Filament Transformers dscrobe Tubes / Valves 1 21st August 2008 04:57 PM
Seperate PSU Transformers? Filament Supplys? ak_47_boy Tubes / Valves 15 3rd May 2007 11:33 PM
filament source connection to DHT metebalci Tubes / Valves 7 17th April 2004 10:18 AM
possible source of transformers?? zx3chris Parts 8 12th February 2003 03:14 AM

New To Site? Need Help?

All times are GMT. The time now is 01:36 PM.

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