Eecs 2210 - Electronic Circuits and Devices

York University

Dept. of Electrical Engineering and Computer Science

EECS 2210 - Electronic Circuits and Devices

Lab Report

Lab 3

Lab Diode

Submitted by Muaawia Bin Arshad (213850284)

                     My lab partner was Damanpreet Chhina

Date: Thursday, March 3, 2016

The work in this report is my own. I have read and understood York University’s academic dishonesty policy and I did not violate the senate dishonesty policy in writing this report.

Signature

__________________

ABSTRACT

This lab primarily focused on testing the forward bias i-v characteristics of a typical diode. To this end we built several circuits and performed two different sets of measurements as indicated below:

• Using the Digital Multi-meter to measure the current through, and the voltage across a diode.
• Using an oscilloscope to achieve the same objective as part 1

The graph of i-v characteristics after both sets of measurements had the same general shape.

Next we used a rectifier circuit built using a diode and shunted a capacitor across it to filter the rectified output.

Table of Contents

Abstract                                                                                                  ii

Introduction                                                                                                 1

Equipment                                                                                                  1

Analysis                                                                                                  1

Experimental Setup and Results                                                                         1

        DC Resistive Circuit                                                                         1

        DC Active Circuit                                                                                 3

        AC Transient Analysis                                                                         4

        AC Frequency Domain Analysis                                                                 6

Discussion of Results                                                                                 7

Conclusion                                                                                                  7

References                                                                                                  8

INTRODUCTION

Diodes are 2-terminal devices that act differently depending on the polarity of the voltage applied to it The diode allows current to flow in only one direction (usually, since in the breakdown region the current can flow in the opposite direction). Typically, the i-v characteristics of a diode look like the following graph (numbers may vary from diode to diode). Anode Cathode Lab manual EECS York University -53- We would like to measure the i-v characteristics of the diode; we will do this in two different ways. First, we construct a simple circuit that allows us to measure the current for different values of the voltage across the diode and plot them. Second, we will use the scope to display the i-v characteristics of the diode [1].

ANALYSIS

Please refer to the prelab three for a detailed analysis performed with the aid of PSPICE.

EQUIPMENT

• 1N4148 Diodes
• DC Power Supply
• Oscilloscope
• 100Ω Resistor
• 1 KΩ Resistor
• Breadboard

EXPERIMENTAL SETUP AND RESULTS

PART 1

[pic 1]

Figure 1: Circuit diagram for part 1

Following table summarizes the characteristics of the resistor (R1)        

Table 1: Resistance Characteristics

Diode Characteristics are summarized in the following table in the following table.

Table 2 : Diode characteristics