This triac circuit was taken from an article in the July 1970 Radio Electronics magazine. Note the snubber formed by R5 and C3 for controlling inductive loads.
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...