Telephone Headgear

Posted on Feb 6, 2014

Telephone Headgear. Acompact, inexpensive and low component count telecom head- set can be constructed using two readily available transistors and a few other electronic.

Telephone Headgear
Click here to download the full size of the above Circuit.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Pulse Induction Metal Detector
    Electronic ship siren
    Half wave AC phase-controlled circuit
    Automatic plant waterer
    High Voltage AC Calibrator Circuit Using Op Amp
    comb filter
    adding vu meter to your computer
    Cat and Dog Repeller
    Car Battery Failure Detector
    Voltage controlled sine wave oscillator