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very quickly. Potentially, it will charge so quickly that it'll pull
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too much current from the power supply (i.e., short the power supply
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and trip it). So the resistor limits this. Unfortunately, the
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the main circuit). 10Ω was chosen as a value due to these rough
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1V across the resistor, that's 1V / 0.5A = 2Ω (from V=IR). The 100μF
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was a guess (from Dad), but "PCB" Mat suggested something larger, like
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2200μF. So we went with 1000μF, which appears to power the board