Scr Latching Circuit Diagram. I didnt have the specified transistors so i used a 2n3906 pnp and a 2n4424 npn. The motor will be having two windings namely field winding and armature winding.
A number of in circuit tests can be carried out on an scr. Transistors t1 and t2 along with the other passive components form a regenerative type of oscillator circuit with c1 and r6 defining the rate of oscillations. This may include techniques that prevent an scr from turning on when a fault in the load is detected.
Connections are made as shown in the circuit diagram.
I dont know if that is a problem or not. Earlier i had tried a circuit similar to fig. By varying the anode cathode supply voltage v aa gradually in step by step note down the corresponding. The motor will be having two windings namely field winding and armature winding.