1 khz oscillator

Posted on May 30, 2012

This circuit operates as an oscillator and a timer. The 2N6028 is normally on due to excess holding current through the 100 k resistor. When the switch is momentarily closed, the 10 µ¥ capacitor is charged to a full 15 volts and 2N2926 starts oscillating (1.8 and 820 pF).

1 khz oscillator
Click here to download the full size of the above Circuit.

The circuit latches when 2N2926 zener breaks down again.

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