Re: Phantom Power

On Sat, 10 Nov 2007 18:56:07 -0800, in sci.electronics.design
HardySpicer <gyansorova@xxxxxxxxx> wrote:

What's the best way to provide 48V phantom power for a portable
battery operated microphone device. Obviously a dc-dc convertor of
some sort. Let's assume the power supply is dc 9V.If I were doing it
from scratch I would make an oscillator - step up the voltage then
rectify.

Hardy
I was thinking of one of those tiny class D speaker amps, wired as a
wien bridge osc, with suitable lightbulb (fet stabilisation should
obviously never be used for audio :-) into a little step up tranny
and a rectifier. Might work quite nicely


Martin
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