Question
Download Solution PDFThe following circuit act as :
This question was previously asked in
KVS TGT WET (Work Experience Teacher) 23 Dec 2018 Official Paper
Answer (Detailed Solution Below)
Option 3 : Silicon Controlled Rectifier
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Detailed Solution
Download Solution PDFThe circuit diagram in the question is of SCR.
Important Points Darlington Pair: CC – CC
- Darlington pair is a special arrangement of two standard NPN or PNP bipolar junction transistors (BJT) connected together
- The Emitter of one transistor is connected to the base of the other to produce a more sensitive transistor with a much larger current gain
- It is useful in applications where current amplification or switching is required; The voltage gain is unity in this case
The symbolic diagram of the Darlington pair is shown below
It has high current gain β (equal to the product of current gain of individual transistors)
It also has high input impedance and low output impedance.
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