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Lab#3 Report - POLYTECHNIC UNIVERSITY-BROOKLYN Department...

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POLYTECHNIC UNIVERSITY---BROOKLYN Department of Electrical Engineering Experiment 3: Circuit Applications of Semiconductor Diodes Date Experiment Performed: Mar. 9, 2007 Date Report Submitted: Mar. 30, 2007 Pratik Mathur & Brendan Jou Lab Section: A2
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POLYTECHNIC UNIVERSITY---BROOKLYN Department of Electrical Engineering A. Abstract : To observe several of the practical applications of semiconductor diodes, various circuit configurations where wired and the output characteristics and diode properties were inspected and compared to expected or theoretical results. In particular, the half-wave rectifier (with and without capacitive filtration), full-wave bridge rectifier, diode clipper circuit, and voltage regulator circuit were observed in the laboratory. All the outcomes were similar to their expected theoretical result in that the theoretical case assume ideal diodes (cut-in voltage, V V 0 = γ ; forward resistance, = 0 f r ; reverse/back resistance, b r ), while in the experimental case, it is understandably impossible to model this situation. B. Introduction : Concerning the characteristics of the diode, the diode conducts and is considered to be in the forward-biased mode when a positive current/voltage is applied. In this case, a zero voltage drop appears across the ideal diode. Conversely, when a negative current/voltage is applied to the
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