Found in a 1967 RCA documentation, this AC power grid contactor can be fitted with modern equivalent components. The SCR and the diodes must be according to the load current.
This circuit was found in GE documentation from the 90s. The circuit can be used as a shield for...
The output voltage of this circuit is approximately four times the supply voltage. The circuit is from...
Figure 1 shows a simple audio oscillator driven by the SCR When the sensor is closed. The circuit...