Overtone crystal oscillator


Posted on Sep 26, 2012

This circuit employs an adjustable resonant tank circuit which insures operation at the desired crystal overtone. Cl and LI form the resonant tank circuit, which with the values specified as a resonant frequency adjustable from approximately 50 MHz to 100 MHz. Overtone operation is accomplished by adjusting the tank circuit frequency at or near the desired frequency


Overtone crystal oscillator
Click here to download the full size of the above Circuit.

The tank circuit exhibits a low impedance shunt to off-frequency oscillations and a high impedance to the desired frequency, allowing feedback from the output. Operation in this manner guarantees that the oscillator will always start at the correct overtone.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Temperature Controlled NICD Charger
    Phase sequence detector
    triangular wave oscillator
    Variable on-off times circuit using two 555 timers
    Vacuum tube VCO
    Motion Detector with PIR Sensor
    Phase-sensitive rectifier circuit



    Top