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lab1 - University of California San Diego Department of...

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University of California, San Diego Department of Electrical and Computer Engineering ECE65, Spring 2010 Lab 1, Introduction to PSPICE Simulations Note: Each student has to turn in this assignment (treat this as a homework, do not use the lab report format). Due in the class on Wed. April 14. Attach the simulation circuit and all simulation results to your work. Problem 1: Voltage Divider (Bias Point, DC Sweep, Parametric sweep, plotting) 1 2 L i o o - + + - R R R v v i In many occasions we need to bias the circuit compo- nents with a voltage that is different than the power supply voltage. Other times we need to feed back a signal proportional to the output signal of one part of the circuit to another part. The voltage divider circuit below (circuit in the “box”) is the simplest circuit that does these functions and, therefore, is used extensively in the electronic circuits. 1) Calculate the Thevenin equivalent circuit of the voltage divider (the “box). Use the Thevenin equivalent circuit to find v o and i o
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