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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3 1/2 Digit Multimeter (CB24541E)
This circuit is from a March 1978 Radio Electronics magazine article that showed how to build it....
Amplifier for multimeter (CB23761E)
This circuit was obtained from an article in Radio Electronics magazine in October 1966. It...
Bistable Touch Switch 4093 (CB15522E)
In the figure we have a bistable circuit that activates LEDs from touch rings and turns off data...