About Area 50


Posted on Feb 6, 2014

This circuit divides a 10 MHz reference to 1, 10, 100 or 1000 pulses per second. The pulse width is also jumper selectable with lots of choices. A sync input will align the pulses with an external pulse, say from a GPS receiver. The outputs are hiding over there at pins 8 and 9 of the `7474. The input is at the bottom of the schematic and is reall


About Area 50
Click here to download the full size of the above Circuit.

y just a sketch of a typical sine-to-square converter. Those parts aren`t on the prototype in the photo. Just use a logic level directly into pin 5. A line receiver is a good way to square up a sine wave, too.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Metal Detector circuit
    Radio Wave Alarm
    16-300 MHz Testing Colpitts oscillator
    USB Microphone Line Level Preamp
    music in a chip
    make this simple delay on circuit
    microphone amplifier 20khz 12v
    TA8136S Radio Control Transmitter Ic - Toshiba Semiconductor
    FET audio mixer circuit
    Pioneer CLD-1090
    Circuit of RIIA phono pre-amplifier op-27
    Stock dial telephone line power supply circuit diagram
    Coship CDVB3188V receiver switching power supply circuit



    Top