Identify the component shown in the image below:

Question

Question

This question was previously asked in

ALP CBT 2 Electronic Mechanic Previous Paper: Held on 21 Jan 2019 Shift 1

Answer 1

The symbolic diagram of the Darlington pair is shown below:

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A Darlington pair is a two-transistor circuit with the emitter of one transistor is connected to the base of other transistors, while both collector terminals are connected to the common terminal
It has high current gain β; (equal to the product of current gain of individual transistors) and is useful in applications where current amplification or switching is required.
It also has high input impedance and low output impedance.
The current gain of a Darlington pair in common emitter configuration is approximate β²

26 June 1

SCR:

F1 S.B Shubham 02.06.20 D 16

DIAC:

F1 U.B Madhu 8.11.19 D 12