Circuit diagram of the capacitance measuring device

Capacitance measurer circuit

The circuit is as shown. This is a photoelectrically used circuit for calibrating the meter. It can save manual reading and interface with the computer. In the figure, M is the indication header, and it can also be indicated by the multimeter low-voltage DC file. The power supply is a 6V battery, or it can be powered by other DC power supplies, and the voltage can be 6~15V. CX is the capacitor under test. The larger the M indication value, the smaller the CX capacity, and vice versa.



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