This circuit turns off a load after an interval of 8 to 80 seconds adjusted on the potentiometer. The circuit is from a Radio Electronics June 1970. The time depends on C1 and can be changed.
This circuit came out from the Linear Circuits Applications of Texas Instruments, based on the...
This 4-digit digital clock for hours and minutes with CMOS integrated circuits was found in a 1995...
This circuit takes advantage of the LC constant of a capacitor and the coil of a relay to...