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Power-Frequency Meter

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The meter uses a zener diode to form square waves from input sine waves. After calibration with the 5 k ohm potentiometer, the 100 mA meter reads directly in hertz.


Parts List:
Component: Value: Datasheet: Qty:
Resistor

100K, 2W

Not Available 01
Capacitor

0.22uF

Not Available 01
Diode

SD-40

Not Available 02
Zener BZ148 Not Available 01