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    Circuit board inside computer power supply

    Hi, my pc power supply broke yesterday, so instead of trashing it, I opened it to salvage some components. I found this small board inside: The psu has and input connection and an aux port to power up the monitor. This small board was fitted so that it received mains power from the left...
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    2AA Batteries and one supercap cell

    Hi to all, let's start simple: what should I do if I wanted to play with a couple of AA batteries 1,5v and 1 or 2 supercap cell (2.7v each) to power up a small LED? I'd like to build a small demo board where, given a programmable device to implement some logic (example like a mid range PIC like...
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