Analog frequency meter circuit

Published:2012/8/15 22:10:00 Author:Ecco | Keyword: Analog , frequency meter | From:SeekIC

The circuit can measure the frequency between 1.5kHz ~ 500kHz by connecting C1 ~ C6 different capacitors. The maximum frequency is up to 1MHz. Transistor T1 can be used as the integrator, and its load resistor is 15kΩ resistor and R1 ~~ R6 adjustable resistors. Integrator's input signal is about 4 to 10V ( peak - peak value).



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