Electronic voltmeter circuit based on CD4007

Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin
1.5PF SOT23-6 Low Capacitance 5V Breakdown Voltage 6V SRV05
Shunuo varistor / ESD varistor / product complete / Sunlord first-class agent
Brand AVX TPSE226M035R0125 Low impedance tantalum capacitor AVX 22
Electronic scale crystal oscillator 3.2*2.5mm 3225 16M (16.000MHZ) 12PF 10PPM 20PPM 30PPM

Electronic voltmeter circuit based on CD4007

As shown in the figure, the circuit can automatically select the measurement range according to the magnitude of the measured voltage without the direct participation of the person. The slave side greatly reduces the workload of inspection and adjustment. During the measurement, when the measurement voltage rises, the circuit will automatically The nearest higher range is selected for measurement, and when the measured voltage drops, it is automatically turned on to the lower range for measurement. Therefore, even if the manual operation is wrong, the incorrect voltage range to be tested is selected, and the mechanism is not overloaded.



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