Exp 11 - Electronics I Lab EXP 11 Design of Common-Emitter...

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Electronics I Lab EXP 11 Design of Common-Emitter Amplifiers Instructor: Ms. Lama Amr Class: Monday 14:00 Work Team: Marwan Ayesh 20710041 Mahmoud R. Arekat 20811853 01.01.11 Theoretical Background:
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The Common Emitter Amplifier Circuit In the Bipolar Transistor tutorial, we saw that the most common circuit configuration for an NPN transistor is that of the Common Emitter Amplifier and that a family of curves known commonly as the Output Characteristics Curves , relates the Collector current (Ic), to the output or Collector voltage (Vce), for different values of Base current (Ib). All types of transistor amplifiers operate using AC signal inputs which alternate between a positive value and a negative value so some way of "presetting" the amplifier circuit to operate between these two maximum or peak values is required. This is achieved using a process known as Biasing . Biasing is very important in amplifier design as it establishes the correct operating point of the transistor amplifier ready to receive signals, thereby reducing any distortion to the output signal. We also saw that a static or DC load line can be drawn onto these output characteristics curves to show all the possible operating points of the transistor from fully "ON" to fully
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This note was uploaded on 11/10/2011 for the course COMPUTER E 444 taught by Professor Amigo during the Fall '10 term at Al-Quds University.

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Exp 11 - Electronics I Lab EXP 11 Design of Common-Emitter...

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