This circuit was found in a 1965 Electronic Design. What it does is respond only to positive pulses (above zero volts) and can be used in automation systems.
Epson SG 8018 Epson Crystal Programmable Oscillators Available from Mouser Electronics, these...
This simple rhythmic light circuit uses a 110 V to 220 V transformer and can hold a good number of...
The CMOS TLC555 [equivalent to the bipolar 555] can be used as a monostable in the configuration...