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Introduction   I'm having a bit of fun experimenting. With capacitor leakage. It's all a bit ad hoc and Heath Robinson- ish, and I'm probably setting a very bad example of how to go about engineering, but never mind. As long as you just read it out of interest and keep saying to yourself 'why doesn't he do it properly?' or 'that's a useless way to do things, I can think of a much better way', we'll be fine. I'm doing this with fairly minimal test equipment - just a fairly average 20 ...