This circuit of an Electronics Hobbyists Handbook uses a different configuration for a triac. The circuit uses an integrated frequency divider and a coupler with a fotodiac.
This circuit was obtained in a documentation for radio amateurs in 1974. The coil consists of 12...
This simple alarm for doors and windows was found in a Japanese publication from the 1960s. The...
This is a circuit of the 80's ON Semiconductor thyristor manual. Of course, the configuration can be...