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From: "Smile, it can only get WORSE"
Subject: Re: low loss transformer availability?
Date: Sat, 04 Jan 2003 20:11:29 -0500
Organization: Posted via Supernews, http://www.supernews.com
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>Millihertz? Really? Megahertz might make more sense but then we'd be
>doing RF design, not power supply design...
Megahertz (or magacycycles for those of you who know what that
mhz was a typos.
>This is not too far out of range for a capacitor-based voltage multiplier;
>they're very good at low currents. Something like the one at the top of
>Don Klipstein's page at
>but you don't need the stepup transformer beforehand.
>>PS: Please don't send me any switching power supply design messages.
>>My input is AC, my output has to be AC and I can't use switching mode
>Unfortunately all the voltage multipliers that I know of make DC (and
>not even pulsating-very-much DC).
>120 VAC out could be done with an oscillator on the output... some oldish
>(1960's) TI transistor handbooks have examples IIRC. It's not clear to
>me whether you are building a power supply or a matching transformer (does
>the AC out have to have the same frequency as the AC in?)
>What kinds of transformers have you been looking at, just power transformers?
>Audio matching transformers often have 10:1 turns ratios and just might
>be able to approach standby losses in the 10's of mW's.
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