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Exercise 4.4: Multi-stage circuit design (LTspice only) Design a current amplifier based on the fo ...
Exercise 4.4: Multi-stage circuit design (LTspice only) Design a current amplifier based on the following specifications. Your circuit must be unique, ie. it cannot be the same circuit another group has used. The point of this comment is that you should not be asking other groups in the class about their design. As part of your design, you should verify that your bias circuit is operating in the forward active region. Most likely, your design will need to be multi-stage and should be BJT amplifier stages. Design specifications: 1) An input impedance, Rin <50? 2) An output impedance, Rout >300? 3) An overall passband gain AI?>100A/A. 4) Rsig =5? and RLoad =10?.
To meet the design specifications, a multi-stage BJT amplifier circuit can be designed as follows:
First stage - Common emitter amplifier:
The input signal is connec...