This long interval timer was found in the September 1976 issue of Radio Electronics magazine. The output can be used to control a relay. The circuit achieves timings of up to 14 hours.
This shield circuit for controlling the direction of rotation of DC motors with current up to 500...
This alarm is powered by the power network, but it has a source that charges a battery that goes...
A Reset-Set flop-flop capable of directly controlling a relay or other power load can be...