Q. SCR has _ layers
Solution:
A SCR (thyristor) consists of four layers of alternate P- type and N- type (P-N-P-N) silicon semiconductors layers, forming three junctions J1, J2, and J3, (J1 and J3 operate in forward direction while middle J2 operates in reverse direction) and three terminals known as Anode (A), Cathode (K), and Gate (G).
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