Surge voltage generator (CB21465E)

Found in a 1967 US magazine this circuit generates positive and negative voltage pulses from a negative transition of the input signal.

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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...