Single chip digital capacitance meter circuit diagram

Single chip microcomputer STM32L151CCU6
1206RGB (single)
SMD aluminum electrolytic capacitor
Chip ceramic capacitor
Patch Murata capacitor

The single-chip digital capacitance meter circuit is shown in the following figure: The circuit consists of a single-chip circuit, a capacitor charging measurement circuit, and a digital display circuit. In addition to the comparator non-inverting input, P1.0 also acts as a discharge loop for the test capacitor CX. The digital tube uses a common cathode digital tube.

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