Battieries for B+ - Page 2 - 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 1st August 2008, 04:59 PM   #11
diyAudio Member
 
Join Date: Jan 2002
Location: Tyrone Ga. U.S.A.
I built a son of zen using batterys. It sounded realy good BUT keeping the batterys charged was a pain in the A**. It's
realy a bummer to be realy into a song and have your batterys
go dead!
  Reply With Quote
Old 1st August 2008, 07:02 PM   #12
diyAudio Member
 
whitelabrat's Avatar
 
Join Date: Dec 2006
Location: Maryland
Heck. Go Solar! That would be fun experiment.
  Reply With Quote
Old 4th August 2008, 11:11 PM   #13
w5jag is offline w5jag  United States
diyAudio Member
 
Join Date: Feb 2007
Location: Arkansas
Quote:
Originally posted by whitelabrat They already are spooked by my tube headphone amp. The little guy only draws about 22 watts total which I figure would be doable with batteries, especially if I keep the heaters on the mains AC.[/B]
If you only need headphone power, something like a 3V4 or 3Q4 will deliver almost 300mw at about 100 volts B+. The filament is center tapped so it can use 1.5V or 3V.

These were routinely used as the output tube in battery operated radios and can easily drive small efficient speakers.

22, 45, and 67 volt B+ batteries are still made. Antique Electronic Supply has them. If you need some gain before the PA, there are lots of tubes in the 1xxx family to pick from.

I have toyed with 3Q4 as low as 36 volts, but to me they sound best (and obviously make more power) at 90 volts or above.

Win W5JAG
  Reply With Quote
Old 5th August 2008, 03:51 AM   #14
diyAudio Member
 
Join Date: Nov 2003
Location: NJ
I'm having a hard time understanding how "balanced power" is different from using a center tapped transformer with a grounded center tap (as in most tube amp power supplies)?
__________________
My tube stuff webpage:
http://www.vacuumtubecentral.com
  Reply With Quote
Old 5th August 2008, 04:12 AM   #15
JandG is offline JandG  United States
diyAudio Member
 
Join Date: Jan 2005
Location: Washington State
I ran a string of Dewalt 18v batteries into several preamps & some small amps all witjout loosing power, but needed my batteries back for work. I have ran them to almost 200v. I did short out some test clips one time, they dissinigrated instantly.. nothing left but the smoke in my house.., on the plus side they were of course dead quiet & creepy black background.I am to start using the 18v Dewalts in bias suppies for output tubes, this is for sure, I allready have actually, works excellent.
J & G
  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



New To Site? Need Help?

All times are GMT. The time now is 04:15 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