what is the construction ,operations and practical applications of scr?
please include figurs and graphs
- Anonymous1 decade agoFavorite Answer
An SCR is a silicon controlled rectifier. It is a 4 layer device, whereas a bipolar (standard) transistor is 3 layers. Two of the 4 layers are connected together. It is normally open until triggered by a small current, then it latches on, only to be turned off by removing the source of power (the anode has to go near 0V). It is usually used in AC applications. It is a half wave device. A triac is a full wave device, and is basically two SCRS connected back to back.
So, an SCR might be used to control a solenoid (AC) in a 120V application. They are used in motor controls, like a drill. I dont know if todays dimmers use SCRs or Triacs.
- Matt DLv 61 decade ago
What is scr? Silicon controlled rectifier???? What?
- Swapan GLv 41 decade ago
pl. ellaborate "scr" to offer specific answer