ELEC 254- SCR Review

On the scale of 1 to 10, how are you feeling today?

10 means full of energy

Can you recall the main topic from last week's lesson?

A thyristor (SCR) is a

• P-N-P device

• N-P-N device

• N-P-N-P device

• P-N-P-N device

Draw the symbol of a SCR device

Rohan is studying the structure of an SCR for his electronics project. He listed down some terminals but he is not sure if all of them belong to the SCR. He listed Base, Gate, Anode, and Cathode. Which terminal does not belong to the SCR?

• Base

• Gate

• Anode

• Cathode

What is the main function of the gate in an SCR?

• To control the flow of current

• To amplify the signal

• To rectify the signal

• To filter the signal

Which of the following is not a characteristic of an SCR?

• High efficiency

• Low forward voltage drop

• High switching speed

• Low reverse current

Choose the false statement.

• SCR is a bidirectional device

• SCR is a controlled device

• In SCR the gate is the controlling terminal

• SCR are used for high-power applications

Oliver is working on a project that requires a switch. He remembers that SCR can work as a switch but he is concerned about its possible limitation. His coworker, Arjun, suggests that it might be the low switching speed. Is Arjun correct?

• No, the primary disadvantage is low efficiency

• No, the primary disadvantage is high forward voltage drop

• Yes, the primary disadvantage is low switching speed

• No, the primary disadvantage is high reverse current

Which of the following is not a typical application of an SCR?

• Power control in home appliances

• Switching in power supplies

• Amplification in audio systems

• Motor control in industrial applications