Electronics and Communication Engineering - Electronic Devices and Circuits - Discussion
Discussion Forum : Electronic Devices and Circuits - Section 15 (Q.No. 24)
24.
The emitter follower is widely used in electronic instrument because
Discussion:
3 comments Page 1 of 1.
Kelechi said:
6 months ago
Option C is the answer.
High Input Impedance:
* The input signal is applied to the base of the transistor, while the output is taken from the emitter. This configuration results in a high input impedance, meaning it draws very little current from the preceding stage.
* This high input impedance prevents the loading effect on the previous stage, ensuring that the signal is transferred efficiently without significant attenuation.
Low Output Impedance:
* The emitter follower has a low output impedance, enabling it to drive low-impedance loads effectively.
* This impedance matching capability allows for maximum power transfer to the load, preventing signal loss or distortion.
High Input Impedance:
* The input signal is applied to the base of the transistor, while the output is taken from the emitter. This configuration results in a high input impedance, meaning it draws very little current from the preceding stage.
* This high input impedance prevents the loading effect on the previous stage, ensuring that the signal is transferred efficiently without significant attenuation.
Low Output Impedance:
* The emitter follower has a low output impedance, enabling it to drive low-impedance loads effectively.
* This impedance matching capability allows for maximum power transfer to the load, preventing signal loss or distortion.
Praveen said:
3 years ago
The answer is D. Emitter follower High i/p impedance and low o/p impedance.
Carlric sidayon said:
7 years ago
It is the Best use for impedance matching.
(1)
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