Wall wart tube amp?

[moritz]

Is it possible to build a tube amp which runs entirely on wall warts? I'm  paranoid about frying myself on mains power you see...  :|

[thomas2]

hi.. i know what you mean.. check out http://www.sopht.ca/index.php?s=25 ..i was wondering about the same thing not so long ago and was given this link.. pretty cool site.  :lol:

[Steben]

hi.. i know what you mean.. check out http://www.sopht.ca/index.php?s=25 ..i was wondering about the same thing not so long ago and was given this link.. pretty cool site.  :lol:

THIS A COOOOOOOL SITE!
lot of fame for 386 chip... again.

[slajeune]

Glad you liked the site!

Sorry for being very quiet recently.  Been busy with a lot of different things.  First up when I get back to the Sopht amps is going back to the 12AL8.  Basically, I was getting an ugly 'gating' type sound.  I think that it stems from the fact that the input into the triode of the 12AL8 was a bit too high.  Putting a voltage divider before hitting the 12AL8 triode might help it.  Anyways, I should get back to the amps shortly.

Cheers,
Stephane.

[zachary vex]

i designed the nano head completely around a 12 volt dc wall wart that supplies 1.25 amps.

when operating, the unit draws exactly .5 amps.

[slajeune]

Hi Zachary,

From my understanding, you using switching to increase the voltage fed to the plates, right?  The tubes are not operating at 12V on the plates.

Thanks,
Stephane.