The anode of SCR is always maintained at _______potential with respect to cathode

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IPRC (ISRO) Technician B (Electronics) 2018 Official Paper (Held on 22 April 2018)
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  1. high
  2. low
  3. positive
  4. negative

Answer (Detailed Solution Below)

Option 3 : positive
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Detailed Solution

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Explanation:

Silicon Controlled Rectifier is a device that has four layers and three PN junctions.

The silicon control rectifier (SCR) consists of four layers of semiconductors, which form NPNP or PNPN structures, having three P-N junctions labeled J1, J2, and J3, and three terminals.

          

The anode terminal of an SCR is connected to the p-type material of a PNPN structure, and the cathode terminal is connected to the n-type layer, while the gate of the SCR is connected to the p-type material nearest to the cathode.

Characteristic of SCR:

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