Twilight Simulator (CB26055E)

This circuit simulates dusk by slowly dimming an incandescent bulb. It was found in the August 1998 issue of Electronics Now magazine.

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“Buffered” Phase Shift Oscillator (CB12741E)
The buffered phase shift oscillator circuit shown in the figure oscillates at a frequency of 2.9...
Wireless Microphone MW (CB12886E)
This experimental AM microphone was found in an Argentine publication from 1973. The recommended...
Transistor Intercom (CB11212E)
This circuit was obtained in an Argentine publication from the 1970s. The circuit can still be...