This circuit for antiparallel control of thyristors was found in a Philips publication from 1967. The circuit uses components of the time, and the power components must be mounted on heat sinks.
This low-frequency oscillator was found in a 1963 documentation. Capacitors determine frequency. The...
This circuit uses a triac to detect the level of a reservoir, and a sensitive SCR connected to the...
Found in a 1964 Electronic Design this circuit compares two signals by providing the inverse of the...