This sophisticated circuit was found in the November 1978 issue of Radio Electronics magazine. Based on CMOS logic, it has several types of timing, controlling the wiper relay.
This filter is suggested by the Texas Instruments Linear Circuits Applications, 1986 edition. The...
This CMOS circuit was obtained in a 1980s documentation. The circuit has a 10-second time delay...
This circuit consists of a switched mixer with digital touch control. The circuit was found in old...