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.
Found in a documentation from the 90s, this circuit limits and amplifies a voice signal in the 800...
This circuit is from an Argentine publication from the 1970s but can still be assembled with...
This simple LDO, or low voltage drop regulator was found in an Electronic Design from the 90s. The...