Which transistor amplifier has the highest input impedance?
Answers
In both the common base amplifier and in the common emitter,the signal appears to ground only across the BE diode.
So,
You might except the same low impedance in both.
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Hope it helps....☺
Answer:
Concept:
Analog Electronics, Bipolar junction transistors, and their configuration.
Explanation:
Common Collector transistors are having the highest input impedance. The below circuit is a common collector amplifier.
A common collector amplifier (also known as an emitter follower) is a type of single-stage bipolar junction transistor (BJT) amplifier that is commonly employed as a voltage buffer in electronics.
The base terminal of the transistor is used as the input, the emitter is used as the output, and the collector is used by both (for example, it could be connected to a ground reference or a power supply rail), thus the name. The common drain amplifier is a similar field-effect transistor circuit, and the cathode follower is an analogous tube circuit.
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