current sense

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    PWM Touch Sensor

    Hello all, I am working on a circuit and have come up against. It is a kind of version of the Hulda Clark Zapper, using a 9V battery to produce around a 30kHz PWM signal... I want to detect with my PIC12F1571 microcontroller when the zapper output is connected to a person and when it is not...
  2. D

    Analog circuit for current reversal based on shunt-resistor current direction

    A big thanks to each responder on this closed thread... https://www.electro-tech-online.com/threads/decode-voltage-polarity-to-toggle-a-flip-flop.161667/ Newbie concept schematic needing solution for driving totem gates with a signal on either side of neutral. I sold my home and...
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