Analog Electronics: Emitter Follower Working Principle

AI Thread Summary
An emitter follower, also known as a common collector amplifier, is a transistor configuration where the output is taken from the emitter. This setup provides high input impedance and low output impedance, making it ideal for buffering signals. The working principle involves the transistor being biased in the active region, allowing it to follow the input voltage while providing current gain. Circuit diagrams typically illustrate the NPN or PNP transistor arrangement with the emitter connected to the output load. Understanding the emitter follower's function and applications is essential for effective analog electronics design.
kuchun
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What is an emitter follower? I want to know its working principle with proper circuit diagram..
 
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kuchun said:
What is an emitter follower? I want to know its working principle with proper circuit diagram..

As in your other thread, Google and wikipedia are your friends:

http://en.wikipedia.org/wiki/Emitter_follower

.
 
Here is a good place that will be helpful I hope

The common collector amplifier, often called an emitter follower since its output is taken from the emitter resistor...

http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/npncc.html"

npncc2.gif


And some good applications.

http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/emitfol.html"
 
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Berkeman. You're too fast in posting. :smile:
 
dlgoff said:
Here is a good place that will be helpful I hope



http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/npncc.html"

npncc2.gif


And some good applications.

http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/emitfol.html"
Thanx, it was a great link...
 
Last edited by a moderator:

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