Frequency meter with 10Hz to 2MHz

  
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7208 seven metric system counter is used for frequency meter, it has latch and multiplexing function, and contains direct drive circuit and display driver circuit. 7207IC is divided the output frequencyof6. 5536 MHz crystal oscillator by2 12which produces the 1600Hz square wave for calculator and display connection multiplexing. After fractional fr
Frequency meter with 10Hz to 2MHz - schematic

equency, it produces 0. 1 s and 0. 01 s measurement gating signal and thenchooses communication and reset command pulse, modify ordered pulse. RCA company`s 3130 operational amplifier is used for optimize the input signal.



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