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Exam Questions: Electronics I, ECE 2204, Semiconductors and Diodes, Exams of Basic Electronics

Virginia Polytechnic Institute and State University (Virginia Tech)Basic Electronics

Exam questions for the electronics i course, specifically focusing on semiconductors and diodes. Students are required to use proper units and three significant figures in all calculations. Questions include determining the minimum current flowing through a resistor, identifying the input voltage at which a diode switches, sketching the voltage drop across a diode as a function of time, calculating the number of electrons and holes in a silicon bar, determining the open circuit voltage and short circuit current for a circuit, and finding the load line and q point on an i-v plot.

Typology: Exams

Pre 2010

Uploaded on 09/28/2006

philter
philter 🇺🇸

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Electronics I, ECE 2204, CRN 91555 Exam 1 Semiconductors and Diodes
Use proper UNITS and ONLY 3 significant figures in all calculations.
NAME: _______________________________________
Signature: _____________________________________
By signing this exam, you agree that you have followed the Honor Code.
1. Use the constant voltage drop model for the diode where Von = 0.6V.
a. What is the minimum current flowing through R2?
b. At what input voltage, Vs, does the diode model switch between an open and a battery.
c. Sketch Vo as a function of time with the maximum and minimum voltages clearly labeled
using the graphs on the following piece of the paper.
pf3
pf4

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Download Exam Questions: Electronics I, ECE 2204, Semiconductors and Diodes and more Exams Basic Electronics in PDF only on Docsity!

Electronics I, ECE 2204, CRN 91555 Exam 1 Semiconductors and Diodes Use proper UNITS and ONLY 3 significant figures in all calculations. NAME: _______________________________________ Signature: _____________________________________ By signing this exam, you agree that you have followed the Honor Code.

  1. Use the constant voltage drop model for the diode where Von = 0.6V. a. What is the minimum current flowing through R2? b. At what input voltage, Vs, does the diode model switch between an open and a battery. c. Sketch Vo as a function of time with the maximum and minimum voltages clearly labeled using the graphs on the following piece of the paper.

a. Determine the open circuit voltage and short circuit current for the circuit below. Voc = ______________________ Isc = _______________________ b. Draw the load line on the I-V plot below and find the Q point. c. Using the constant voltage drop model (Von = 0.6V), determine the diode voltage and diode current (vd and id). c. Briefly (1-2 sentences) explain why your answers in part a and b are different.