SCR Thyristor
SCR Thyristor (Silicon Controlled Rectifier) is a unidirectional semiconductor machine fabricated from silicon. This gadget is the solid-state equivalent to thyratron and hence it is also known as thyristor or thyroid transistor. In fact, SCR is a commerce name given to the thyristor by General Electric Company. Principally, SCR is a three-terminal, four-layer semiconductor machine consisting of alternate layers of p-type and n-type materials. Therefore it has three pn junctions J1, J2, and J3. The machine has terminals Anode(A), Cathode(Ok), and Gate(G). The Gate terminal(G) is hooked up to the p-layer nearer to the Cathode(Ok) terminal. The Following Working Modes of SCR Thyristor 1. Reverse Blocking Mode of SCR On this mode, the SCR is reverse biased by connecting its anode terminal (A) to the destructive finish and the cathode terminal (K) to the constructive finish of the battery. This results in the reverse biasing of the junctions J1 and J3, which in flip prohibits the stream ...