Tone Oscillator (CB22066E)

Found in old documentation, this oscillator with the LM380 produces an audio tone in a speaker. Frequency is set in VR1.

Night Switch (CB448)
This circuit turns on a lamp in the dusk and turn off in the down. Only incandescent lamps can be...
Exclusive NOR function with the 4011 (CB16070E)
The Exclusive-NOR function can be achieved simply by adding one more NAND gate as an inverter to...
Headlight switch (CB7259E)
Found in a Popular Electronics from the 80's, this circuit makes use of a time integrated to...