Parallel-mode aperiodic crystal oscillator

Posted on Sep 28, 2012

The crystal is placed between the collector of the output stage and the base of the input stage. The frequency of oscillation can be set to a precise value with trimmer capacitor CI. The range of operation for this circuit is 500 kHz to 10 MHz

Parallel-mode aperiodic crystal oscillator
Click here to download the full size of the above Circuit.

Extend the range downward (100 kHz) by increasing the value of CI to 75 pF and increasing the value of C2 to 22pF.

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