We found this circuit in an English publication from the 1980s. The circuit uses current components and can be tuned for frequencies between 300 and 1500 Hz.
We find this circuit in documentation from the 1980s. The triac and diac are of conventional types...
Found in a 90s Popular Electronics, this circuit uses general-purpose transistors, serving to...
This control for 1200 W of power was found in the documentation of General Electric of 1966 has a...