Unijunction Triac Control (CB25861E)

This power control circuit was found in an article in the June 1995 Electronis Now magazine. The circuit makes use of a trigger transformer.

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Pierce Oscillator (CB12686E)
This oscillator has its frequency controlled by crystal and its frequency can be between 100 kHz...
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This small crystal microphone transmitter was indicated in an 80s spy book. The range depends on...
LM317 Narrow Adjustment Range Regulator (CB14428E)
The circuit shown is from the 1994 Linear Applications Handbook by National Semiconductor. The...