This traditional dimmer configuration for incandescent lamps and heating elements was found in an RCA transistor manual. SCR can be a more modern equivalent like TIC106, depending on the power grid.
This application of the RCA integrated circuit released at the time was found in the August 1970...
This circuit indicates the logical level of a CMOS circuit, extracting the power from the circuit...
In this amplifier, the supply voltage is 35 V and the input resistance is 2k2. Equivalent...