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 setting appears elsewhere in this site from other sources or projects. Instead of the lamp...
The purpose of this game is to find the combination in sequence of keys that causes all three LEDs...
This Hartley oscillator can be used in tests or as a signal injector. The transformer is the type...