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Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx>

At 11:01 AM 7/2/2006, Tesla list wrote:
Original poster: Ed Phillips <evp@xxxxxxxxxxx>

A ham friend of mine is experimenting with a 100 watt CW beacon transmitter on 180 kHz and is looking for very small ESR capacitors in the capacitance range of 0.01 ufd to 0.1 ufd. AC voltage will be around 50 VRMS. Are any of you who are "up on MMC's" aware of suitable capacitors in this low voltage region? He's already using metallized polypropylene (don't know part numbers) but is looking for the smallest capacitors he can find.

Any thoughts? Not your usual MMC application and I'm not sure if anyone makes suitable capacitors for such low voltage.

What about the very low ESR stacked caps they use in miniaturized switching power supplies with high power density? The automotive business is full of nifty new designs for 42V, etc.