We found this circuit in the October 1996 Electronics Now magazine. The circuit uses LDRs as sensors and drives relays. The relays must have voltages according to the power supply.
This monostable multivibrator with signals in phase opposition was found in October 1986 Radio...
I found this simple circuit from an English magazine from 1984. The circuit can be easily...
We found this circuit in a Harris Semiconductor Databook of 1977. The circuit can be implemented with any...