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I have a circuit that powers some leds when vibrations are detected. I am trying to integrate a PMOS for reverse polarity battery protection.

When the PMOS is present the circuit simulation fails as soon as the piezo (simulated using V1+R1) sine wave starts i.e. TDelay secs. Without the PMOS the circuit works as expected but I don't have any reverse polarity protection.

Is the piezo closing the PMOS?

Area with PMOS and Piezo

The full circuit Full Circuit

0 Answers0