Thyristor overcurrent protection circuit 2

Adjusting Ro or RP can change the overcurrent setting value.
The circuit is shown in Figure 14-98. When there is overcurrent, the thyristor V is turned on, and the transistors VTi and VT2 are cut off immediately, cutting off
the power supply and playing a rapid protection role. At the same time, the indicator light H lights up.
    Adjust the potentiometer RP to change the overcurrent setting value.