L302.Spice.V5 - L 302-2.V5 Drexel University Electrical and Computer Engr Dept Electrical Engineering Laboratory II ECE L302 E L Gerber K J Scoles

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L302-2.V5 2-1 Drexel University Electrical and Computer Engr. Dept. Electrical Engineering Laboratory II, ECE L302 E. L. Gerber, K. J. Scoles ACTIVE CIRCUIT ANALYSIS with PSPICE Object The goal of this experiment is to gain further experience with Cadence’s Spice, particularly with Schematics, PSpice, the circuit simulator, and Probe. In this experiment we will do schematic capture using parts libraries, run simulations in PSpice, display results in Probe, and then analyze the results using material learned in ECE Lab I and last week’s experiment. The basis for our work will be the bipolar transistor (BJT) amplifier circuits and the operational amplifier (op-amp). We will solve DC circuits and AC steady state circuits. Also, time dependent analysis will be performed as well as temperature effects. Prelab We will simulate three circuits that were studied in previous experiments. Prepare a table in Excel which includes two sets of data: DC and AC. The DC values of I B (DC), I C (DC), V CE (DC), I b . And the AC values of (AC), I c (AC), V ce (AC), A I = I c / I b , A V = V ce / V in , and β . Collect your results from the common emitter amplifier circuit in Experiment 1, and enter them in this table. Clearly indicate DC and AC quantities and their units. Note, I X is a DC quantity and I x is an AC. Introduction This experiment is intended to expand your knowledge of Cadence’s PSpice, and Probe, and computer simulation tools which are useful in verifying a circuit analysis and in “virtual breadboarding.” The PSpice circuit simulator, and its companion graphic analysis program Probe, are written and distributed by Cadence for PC and UNIX platforms. PSpice can simulate analog, digital or mixed-mode (analog and digital) circuits. Simulations can be performed in the time domain (transient analysis) and frequency domain
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L302-2.V5 2-2 (frequency response), as well as performing voltage sweeps. Probe displays the results of PSpice simulations, and can do mathematical and graphical analysis of the results. The original Spice simulator was developed in the 1980s, by a group at the University of California at Berkeley. The name Spice stands for Simulation Program with Integrated Circuit Emphasis. The circuit simulator produces a record of voltages and currents at each circuit node at each simulation time, voltage or frequency step. General Procedure: PSpice is capable of simulating almost any analog or digital circuit. One must first define that circuit in a schematic diagram with all of the appropriate element values specified, including sources. Then, an analysis method must be selected, such as AC or DC. Most often, but not always, the results are obtained graphically in the form of a plot. Various electronic and circuit elements are available in the several PSpice libraries in the
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L302.Spice.V5 - L 302-2.V5 Drexel University Electrical and Computer Engr Dept Electrical Engineering Laboratory II ECE L302 E L Gerber K J Scoles

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