The integrated circuit used in this application is not currently common. The circuit is from 80s documentation. The power depends on the controlled load.
This was the name given to the Darlingtons in the 1950s. The circuit is from a November 1952 Radio...
This simple half-wave control using an SCR, which may be TIC106, has been obtained from a US...
We found this circuit in an old documentation. The operational amplifier used is uncommon today, but...