Found in a 1947 publication, this circuit uses 4 parallel/push-pull tuber in the output stage. The circuit employs dual power supply with two rectifier tubes.
The high sensitivity of this type of SCR recommended in our assemblies allows it to be triggered by low...
Found in a 90s documentation, this circuit triggers the SCR when there is an overvoltage in order...
This circuit was found in a 1989 documentation and was intended to be part of a presence...