Crystal Pierce Oscillator (CB6149E)

This circuit uses a 100 kHz crystal, but nearby frequencies can be obtained with appropriate crystals. Components are still common today.

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Dimmer For Courtesy Light (CB13290E)
This circuit controls the brightness of a 12 V powered car courtesy light. The transistor can also...
LM388 Bridge Amplifier (CB12030E)
This circuit from Radio Electronics magazine, March 1994 edition uses two LM388 bridged, providing a 4...
100 kHz crystal oscillator (CB9638E)
This basic 100 kHz oscillator is suitable for use in calibration. We found it in documentation from the...