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

    high impedance input JFET/BJT buffer circuit
    Control 7 segment LED displays with AVR
    room noise detector
    pic icsp
    Phase Locked Loop (PLL) Oscillator Circuit 860 MHz
    Pioneer CLD-1950
    USB Printer Share Switch
    SAA1042 stepper motor control circuit