ECE302 - Lab2

ECE302 - Lab2 - Laboratory Report 2 Camry Simpson...

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Laboratory Report 2 Camry Simpson Laboratory Report 2 9/21/2010
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Laboratory Report 2 2.0 Prelab For this part of the lab, we determined how to extract I s and n from I D vs. V D curves. 1) Displayed below is the execution of the extraction of both I s and n from the curves: I D = I S (e VD/nVT -1) ON VD >> V ɣ e VD/nVT >> 1 Therefore: I D = I S (e VD/nVT ) ln(I D /I S ) = V D /nV T ln(I D ) – ln(I S ) = V D /nV T OFF VD >> V ɣ I D = -I S 2) We then created the following in PSPICE and performed a sweep on the diode from -1V to +3V which is displayed in the following I D /V D curve. Displayed in the second curve is the same circuit, with a .1V to 1V sweep. 3) Introduction In this Lab, we measure I-V Characteristics of diodes, extract parameters from the diode equation, and build/analyze diode circuits in order to familiarize ourselves with diode characteristics. 3.0 Procedure 3.1 Measuring the I-V Characteristic of a diode V i n 1 V d c D 1 D 1 N 4 0 0 2 o u t 0 V_Vi n - 1. 0V - 0. 5V 0V 0. 5V 1. 0V 1. 5V 2. 0V 2. 5V 3. 0V I ( Vi n) - 60A - 50A - 40A - 30A - 20A - 10A 0A V_ Vi n 0. 1V 0. 2V 0. 3V 0. 4V 0. 5V 0. 6V 0. 7V 0. 8V 0. 9V 1. 0V I ( Vi n) - 1. 6A - 1. 4A - 1. 2A - 1. 0A - 0. 8A - 0. 6A - 0. 4A - 0. 2A 0A V 1 1 k V d 0
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Laboratory Report 2 In this section, we constructed a diode circuit and performed a -6V to 3V sweep and modeled the following
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This note was uploaded on 01/28/2012 for the course ECE 302 taught by Professor Barlage during the Fall '07 term at N.C. State.

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ECE302 - Lab2 - Laboratory Report 2 Camry Simpson...

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