Silicon Controlled Rectifier Conclusion. What two things must happen to cause an scr to fire. Conclusion finally silicon control rectifier scr are widely used in many areas of electronics.
Scr devices also feature a preset holding current value below which they will not conduct even if switched on. The principle of four layer p n p n switching was developed by moll tanenbaum goldey and holonyak of bell laboratories in 1956. The scr is turned off when the anode is made negative with respect to the cathode.
The schematic symbol of a silicon controlled rectifier is shown in the below figure.
Silicon controlled rectifiers are used in power control applications such as power delivered to electric motors relay controls or induction heating elements where the power delivered has to be controlled. A silicon controlled rectifier scr is a semiconductor device designed to switch and control high current loads. The silicon controlled rectifier scr scr conduction. The schematic symbol of a silicon controlled rectifier is shown in the below figure.
