This simple SCR trigger was found in a 1965 General Electric SCR manual. The circuit makes use of a diac, and the transistor supports an equivalent.
Found in Unitrode documentation from the 1980s, this circuit makes use of PUTs, currently common...
This bidirectional motor control was found in an 80's Electronic Engineering. The circuit uses a...
We found this circuit in the 1972 RCA Linear Integrated Circuits Manual. The circuit can generate...