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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General Purpose Meter (CB23574E)
Measuring capacitances and resistance this simple instrument was found in Radio Electronics...
Current Source with the LM143 (CB14270E)
The LM143 integrated circuit is a high voltage operational amplifier from National Semiconductor that is...
Hexadecimal display circuit (CB24921E)
We found this circuit in the November 1985 issue of Radio Electronics magazine. It uses TTL...