The emitter follower has many applications for impedance matching and buffering other active circuit modules. The impedance matching and current amplifying characteristics of the emitter follower provide buffering for the zener and draw less current from it. It is a useful adjunct to a Zener regulator. The circuit on...
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hyperphysics.phy-astr.gsu.edu/hbase/electronic/emitfol....
hyperphysics.phy-astr.gsu.edu/hbase/electronic/emitfol.html
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The common collector amplifier, often called an emitter follower since its output is taken from the emitter resistor, is useful as an impedance matching device since its input impedance is much higher than its output impedance.
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hyperphysics.phy-astr.gsu.edu/hbase/electronic/npncc.ht...
hyperphysics.phy-astr.gsu.edu/hbase/electronic/npncc.html
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An emitter follower circuit shown in the figure is widely used in AC amplification circuits. The input and output of the emitter follower are the base and the emitter, respectively, therefore this circuit is also called common-collector circuit.
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fourier.eng.hmc.edu/e84/lectures/ch4/node9.html
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This is an emitter follower or buffer amplifier circuit, where the output is simply equal to the input minus a diode drop (about 700mV).
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www.falstad.com/circuit/e-follower.html
www.falstad.com/circuit/e-follower.html
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The input of the emitter follower is the base and the output is the emitter. a voltage divider and the output of the emitter follower connected to a...
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surf.hep.upenn.edu/~kroll/p364_fall08/handouts/emitter_...
surf.hep.upenn.edu/~kroll/p364_fall08/handouts/emitter_follower.pdf
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The emitter follower (EF) configuration is shown in Fig. 2.12. Figure 2.12: Emitter Follower Circuit The EF amp has a voltage gain of approximately one. With this kind of gain, you may ask what is the point? The point is that an EF has a very low output resistance and a high input resistance.
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www.ece.umd.edu/~neil/man/node40.html
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; Direction: Enter the values for VCC, B, R1, R2, RS, and RE. Then push the Evaluate button. Note: A v is the gain, Rin is the input resistance, Rout is the output resistance. Websit feedback to: kaho@ee.umd.edu Rin = Ohm...
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www.ece.umd.edu/~neil/306/ckts/ef.htm
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Ever try interactive learning? The fun way to learn. Download Part 1 it's FREE; emitter feedback Coupling from the emitter output to the base input of a bipolar junction transistor.
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www.twysted-pair.com/dicte.htm
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Common Collector Amplifier / Emitter Follower Our second amplifier circuit is a current amplifier called an emitter follower with a linear voltage gain of approximately one. The output impedance of the circuit is much smaller than the input impedance, while the voltage level is unchanged.
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webpages.ursinus.edu/lriley/ref/circuits/node4.html
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