Ion generator (CB7837E)

This negative ion generator was found in a 90s Popular Electronics. The autotransformer can be an automobile ignition coil.

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Narrow Pulse Generator (CB15948E)
This circuit is suggested by Texas Instruments and is based on a relaxation oscillator with...
Switching Power Supply UC3442 (CB25381E)
This multiple switching power supply was found in the April 1991 issue of Radio Electronics...
Psychedelic Glasses CIR25211S CB25211E (CB25211E)
This project was published in the April 1989 issue of Radio Electronics magazine. It drives LEDs...