We found this circuit in the October 1970 issue of Radio Electronics magazine. It uses the then-new CA3018 integrated circuit from RCA. Some resistors are required for best performance.
This circuit was found in a Popular Electronics from the 90's. The output signal can be applied to a...
This circuit, which appears at other points on this site, can be designed with both 4011 and 4001...
This 40-second timer uses common components. The output can be used to excite a power stage. With...