ECE 205 Homework 12.pdf

# ECE 205 Homework 12.pdf - ECE 205 Electronic Circuits...

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ECE 205: Electronic Circuits Homework 12 (Due: Wednesday, April 25) Problem 1 The following circuit has a transistor with V BEOn = . 7 V , V CEsat = . 2 V ,and β = 50. Solve for Ic and V CE as drawn in the circuit. Find the smallest value of β which would cause the above circuit to saturate. Problem 2 The following circuit has a transistor with V BEOn = . 7 V , V CEsat = . 2 V ,and β = 50. Find the value of Vout as marked. 1

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Problem 3 Both transistor are identical with V BEOn = . 7 V , V CEsat = . 2 V ,and β = 25. Find the value of IC1 and IC2, and state the operating mode of each transistor. Hint: make a list of all possible combinations of operating modes for the transistors and by the process of elimination
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