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Simple Frequency Meter

Simple Frequency Meter

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publish time: 2020-10-26
Circuit Everyday

This is a simple frequency meter that determines the input frequency by simply measuring the values of the two resistors and doing a little calculation.Tunable multivibrators and D triggers that can be retriggered form a simple and reliable frequency comparator that compares the input frequency with a predetermined reference.To determine whether the input frequency (f) falls between the two known frequencies F1 and F2, two single-shot/flip combinations are used.

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