27 MHz Oscillator (CB24983E)

This tunnel diode oscillator was found in July 1986, Radio Electronics magazine. Note the low supply voltage.

Stable Oscillator (CB22520E)
This oscillator appeared in the September 1950 Radio Electronics magazine. The frequency is...
Half Wave Dimmer (CB5296E)
The SCR used in this 80's circuit depends on the load. The control is half wave and instead of the neon...
Common Emitter PNP Relay (CB25611E)
This relay shield was found in the October 1993 Electronics Now magazine. The circuit is powered by...