MSP430F169 MCU capacitor efficiency meter

My homemade MSP430F169 MCU capacitor efficiency meter. First it charges a capacitor from 0 to ~ 2.5 volts. Then it discharges the capacitor. The efficiency is 100% * total energy in / energy out. The graph shows |current|. E is energy. Eff is efficiency. At first there’s no current. When you hear some noise, that’s me connecting the circuit, and you’ll then see the current trace shoot up. After awhile you again hear some noise, and the current trace jumps up a bit. That’s when the power supply is removed and the capacitor then discharges through the resistor. globalfreeenergy.info

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