Found in an Electronic Design and 1970s, this circuit uses transistors of the time. The transistors can be replaced with equivalents and the relay is 12 V depending on the power supply.
This circuit is from a 1966 General Electric documentation. The circuit applies to sensitive SCRs for...
This circuit with current up to 100 mA according to the transformer was found in the Radio...
All the components used in this 1997 circuit are still common in our market. The circuit must be...