How Do You Make An SCR Using Two Transistors?
A silicone controlled rectifier, or SCR, is comprised of two transistors with the base from each transistor joined to the collector of the opposing transistor. Current flowing through electronic circuits is significantly amplified after passing through such a double transistor. Electronics manufacturers fabricate various SCR products, but joining two transistors in a circuit will produce the same effect. Turn off the power to any electronic circuits before adding components. Remove the battery and/or unplug the power cord supplying the circuit. Drain power from any upstream capacitors by touching the metal blade of an insulated screwdriver against both terminals on a capacitor simultaneously to exhaust its stored power. (The circuit connection made by the screwdriver blade will draw capacitor power out instantly.) Place a PNP transistor near an NPN transistor on a circuit board. Solder the emitter lead from the PNP to the current source. The emitter lead of the NPN transistor will act
