SMPS, flyback, or vibrator - how to get 280v off of some batteries?

Spasticteapot · 12th July 2007, 06:55 PM

I'm looking to build a guitar amplifier from subminiature tubes, and I'd like to build a subminiature, battery-powered supply to power it. Can anyone suggest the best and most simple way to do this?

I need roughly ten watts at 280v, though a little bit of headroom would be nice.

luka · 12th July 2007, 06:57 PM

Hi

12v --> 280v? Flyback seems good choise, don't know for push pull, but it can be done

Spasticteapot · 12th July 2007, 07:50 PM

Woot! I just found a 6vDC to 280vDC vibrator with "hash filter" on eBay for $20 shipped!

I figure I should go for it - does anyone have any familiarity with these devices?

star882 · 14th July 2007, 01:16 AM

Take one of those cheap power inverters and rewire the bridge rectifier of the push pull stage into a voltage doubler. Or just put a voltage doubler on the output.

12th July 2007, 06:55 PM	#1
Spasticteapot diyAudio Member Join Date: Jan 2006 Location: Wisconsin....what did you expect?	SMPS, flyback, or vibrator - how to get 280v off of some batteries? I'm looking to build a guitar amplifier from subminiature tubes, and I'd like to build a subminiature, battery-powered supply to power it. Can anyone suggest the best and most simple way to do this? I need roughly ten watts at 280v, though a little bit of headroom would be nice.

12th July 2007, 06:57 PM	#2
luka diyAudio Member Join Date: Sep 2005 Location: in Slovenia :)	Hi 12v --> 280v? Flyback seems good choise, don't know for push pull, but it can be done __________________ home page @ http://www.classdaudio.co.cc @ 24/7 all year long I FEEL SLOVENIA

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12th July 2007, 07:50 PM	#3
Spasticteapot diyAudio Member Join Date: Jan 2006 Location: Wisconsin....what did you expect?	Woot! I just found a 6vDC to 280vDC vibrator with "hash filter" on eBay for $20 shipped! I figure I should go for it - does anyone have any familiarity with these devices?

14th July 2007, 01:16 AM	#4
star882 diyAudio Member Join Date: Mar 2007	Take one of those cheap power inverters and rewire the bridge rectifier of the push pull stage into a voltage doubler. Or just put a voltage doubler on the output.

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