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 from a June 1957 Radio Electgronics is for oscilloscopes of the time with a maximum...
This circuit is from an English magazine Radio and Electronics Constructor of November 1978. The...
This circuit was obtained from a Linear Technology manual from the 90's. The integrated circuits are...