The Triac trigger integrated circuit is not very common nowadays. The circuit was found in the Radio Electronics Experimenter magazine from 1989. The triac should be in accordance with the heater.
This alarm circuit was found in the July 1992 Radio Electronics magazine. The circuit uses a small...
This circuit uses only passive components and the instrument can be a microammeter or the lowest...
This circuit is from an American documentation from 1975. The circuit uses components of the time...