This full-wave dimmer with SCRs was found in General Electric documentation from 1965. The circuit uses a unijunction and serves only for incandescent lamps.
This project was obtained in a 1982 documentation. The board consists of a labyrinth with trails...
The figure shows several power stages that can be used with digital circuits and with the 555, as...
This circuit uses an SCR as an active component, working only at short distances. The circuit was...