This control for 1200 W of power was found in the documentation of General Electric of 1966 has a activation delay. The triac must be according to the load.
This circuit, which controls both the temperature and the level of a liquid in a reservoir, was...
This circuit is from 1994, from a technical documentation from National Semiconductor, but can be...
This low power circuit for the FM band was found in a spy book from the 90s. The tunnel diode is...