This circuit for the power grid was found in the June 1969 Radio Electronics magazine. The SCR and diodes are rated according to the power of the controlled load.
We found this circuit in a Radio Electronics from April 1965. The components are from the time and the...
This old integrated amplifier is from a Japanese publication from 1972. The integrated circuit is...
This circuit is from an old European documentation, already influencing the unijunction oscillator that...