Recent Changes - Search:
<^< Diode Characteristics | Course index | Zener Diodes >^>

Electronic circuits and components * Course Index * Introduction * About the Author * About this Course * Feedback * Course Navigation * How to use this Course * TINA * Locktronics

Fundamentals * Introduction: Fundamentals * Units and Multiples * Electricity * Electronic Principles * Electrical Circuits * Alternating Current * Assessment: Fundamentals

Passive Components * Introduction: Passive Components * Resistors * Capacitors * Inductors * Transformers * Batteries, Fuses, Lamps and Switches * Assessment: Passive Components

Semiconductors * Introduction: Semiconductors * Diodes ## Operation ## Forward and Reverse Bias ## Diode Characteristics ##

Worksheet: Diode Characteristics ## Zener Diodes ## Examples: Zener Diodes ## Worksheet: Zener Diodes ## Light Emitting Diodes * Transistors * Logic Gates * Assessment: Semiconductors

Passive Circuits * Introduction: Passive Circuits * Series and Parallel Connections * Kirchoff's Laws * Potential and Current Dividers * Passive Time Variant Circuits * Assessment: Passive Circuits

Active Circuits * Introduction: Active Circuits * Power Supply Circuits * Operational Amplifier Circuits * Transistor Amplifier Circuits * 555 Timer Circuits * Assessment: Active Circuits

Parts Gallery * Introduction: Parts Gallery * Passive Component Images * Semiconductor Images * Other Images * Quizzes

(:Summary:Contains the 'action' links (like Browse, Edit, History, etc.), placed at the top of the page, see site page actions:) (:comment This page can be somewhat complex to figure out the first time you see it. Its contents are documented at PmWiki.SitePageActions if you need help. :) * Print (:comment (:if group Site,SiteAdmin,Cookbook,Profiles,PmWiki*:) (:comment delete if and ifend to enable backlinks:) * %item rel=nofollow class=backlinks accesskey='$[ak_backlinks]'% [[{*$Name}?action=search&q=link={*$FullName} | $[Backlinks] ]] (:ifend:) :) * Login

Diodes /

Worksheet: Diode Characteristics

<^< Diode Characteristics | Course Index | Zener Diodes >^>(:nl:)

Objective: To obtain the I / V characteristic of a silicon diode.
Underpinning knowledge: Semiconductors. Diodes. Forward and reverse connection. Forward voltage drop.
Apparatus: TINA circuit file, or apparatus to make the following circuit.

TINA Circuit File: Click here to download circuit file
Initial Settings: Battery supply = 0.6V. Diode connected in the forward direction.
Requires: Paper, Linear graph paper, pen or pencil.
Instructions:

(a) Measure and record in a table values of current at each of the following forward voltages; 400mV, 500mV, 550mV, 600mV, 650mV, 700mV, 750mV.

(b) Plot a graph to show the variation of forward current, I'_F_', against forward voltage, V'_F_'.

(c) Estimate the forward voltage drop for the diode.

(d) Reconnect the diode in the reverse direction and verify that no reverse current flows for reverse voltages of 1V, 5V and 10V.

Observations:

Comment on the graph produced and the measured forward voltage drop. Is this what you would have expected?

Further work:

Derive characteristics for two common types of diode using models available within TINA. Compare the results with those of the 'ideal' diode.

(:nl:)(:table style="clear:both":)

(:Summary: Website page footer:)

Print - (:comment (:if group Site,SiteAdmin,Cookbook,Profiles,PmWiki*:) (:comment delete if and ifend to enable backlinks:) %item rel=nofollow class=backlinks accesskey='$[ak_backlinks]'% [[{*$Name}?action=search&q=link={*$FullName} | $[Backlinks] ]] (:ifend:) :) Search - Login

Page last modified on August 30, 2011, at 09:06 AM