Precision frequency counter

Posted on Feb 5, 2014

This circuit shows a simple 4-digit frequency counter using an ICM7217 and an ICM7207 (which provides the 1-s gating window and the STORE and RESET signals). The display reads hertz directly, as connected. With pin 11 of the ICM7027 connected to VDD, the gating time is 0. 1 s. This displays tens of hertz at the least significant digit. For shorter

Precision frequency counter
Click here to download the full size of the above Circuit.

gating times, use a 6. 5536-MHz crystal (0. 01s with pin 11 connected to VD and 0. 1 s with pin 11 open)

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Digital IC Tester for 74 series
    Window Detector
    TLE5206-2 H-Bridge Circuit Application and Datasheet
    high current 10 to 20 amp automatic
    clock driver for sparkfun easydriver breakout
    Arduino Controls an Infrared Helicopter
    Tube-based Buffer amplifier
    Safe bedside lamp lighting switch