Analog Electronics: Emitter Follower Working Principle

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SUMMARY

The emitter follower, also known as the common collector amplifier, is a fundamental electronic circuit configuration where the output is taken from the emitter resistor. This configuration is characterized by its ability to provide high input impedance and low output impedance, making it ideal for buffering applications. Key resources for understanding the working principle and applications of the emitter follower include Wikipedia and HyperPhysics, which provide detailed explanations and circuit diagrams.

PREREQUISITES
  • Basic understanding of transistor operation, specifically NPN transistors.
  • Familiarity with circuit diagrams and electronic components.
  • Knowledge of amplifier configurations, particularly the common collector configuration.
  • Experience with analyzing signal flow in electronic circuits.
NEXT STEPS
  • Study the detailed working principle of the emitter follower using the resources from HyperPhysics.
  • Examine practical applications of emitter followers in signal buffering and impedance matching.
  • Learn about the differences between common collector and other amplifier configurations, such as common emitter and common base.
  • Explore simulation tools like LTspice to model and analyze emitter follower circuits.
USEFUL FOR

Electronics students, circuit designers, and hobbyists interested in understanding transistor amplifiers and their applications in signal processing.

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"
 
Last edited by a moderator:
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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