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    Geiger Counter

    This has got to be the world's simplest geiger counter. http://home-and-garden.webshots.com/photo/2033951890048941318ufVtyb 3 volt battery, 1 transistor, 1 transformer, a couple of diodes, capacitors and resistors, a GM tube and a high impedance or piezo electric speaker.
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    High Power combiners

    I'm looking at ways of combining several amp modules to make a single high power amp. I've been consideing a few different methods each on it's own merits. Normaly at lower powers, it would not be an issue. But at high powers, small mistakes can create big fires :) I'm wondering if anybody...
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