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Ideal Diode - Electronics & Communication tutorials

Ideal Diode
Up to this point in your career as an ECE student, you’ve been studying linear electrical components. For example, resistors (R), inductors (L), and capacitors (C) are ideally linear elements (and passive, of course).
Linear Circuit Elements
What do we mean that a component is "linear"? To answer this question, recall there are just two independent qualities of electricity in electrical circuits. These are voltage and current.
A linear circuit element is one that linearly relates the voltage across that element to the current through the element.
Linearity has a precise mathematical statement. If a quantity y is a function of another quantity x, as
y= f( x) (1)
Then y is linearly dependent on x if
my= f( mx) (2)

where m is a constant. In other words, f is a linear function if when quantity x is multiplied by some constant m results in the function simply being multiplied by m.

Here are a couple of examples of linear components in electrical circuits:

This is perhaps a bit tricker, but notice that differentiation is a linear operator: if v increases by a factor m then i does as well.

Ideal Diodes

You will now learn about a new electrical circuit element, the diode. Diodes are made from two different types of semiconducting materials that come together to form a "junction":

The circuit symbol is

which is related to the physical markings on a typical diode as

In stark contrast to resistors, inductors, and capacitors, the diode is a nonlinear element. For an ideal diode, the i-v characteristic curve is

It is apparent from this i-v characteristic curve that there are two distinct regions of operation of the ideal diode:

The ideal diode acts as an electronic "valve" allowing current in only one direction through the diode: in the direction of the arrow in the circuit symbol.
We will find this "valve" behavior very useful in some situations. For example, this is useful to prevent damage to an electronic device when the battery is inserted backwards, for example.

Next - Applications of Diodes

Discuss about DIODE here
Discussion Board for DIODE
You can discuss all your issues on DIODE here
Thread / Thread Starter Last Post Replies Views
Type of diode
I need short notes for all type of diode.

Posted By :-
Oct 27, 11:50:24 AM 0 12076
signals and system
hi i am venkatesh which author use in signal and system for gate

Posted By :-
Oct 13, 4:38:08 PM 0 11748
Thank u
i need some links to download free ebooks multiple choice for my gate preparation - V.Vivek Sharma.

Posted By :-
Oct 4, 9:56:42 AM 0 9338
study materials
i want to study materials of digital communication.

Posted By :-
Feb 6, 3:43:05 PM 4 24074
More examples of non linear circuit analysis
Notes are very simple to understand the concepts.

Posted By :-
Sep 9, 3:17:49 PM 0 15375
study materials
can i get some study materials by online

Posted By :-
Sep 4, 9:05:49 AM 0 11435
hiii plz give me basic information about electromegnetics
i have a dout between combination of electrostatics and megnetostatics

Posted By :-
Jul 29, 2:38:13 PM 0 9977
pls send me a link on answered problems on electronic devices and circuit theory by boylestad and nashelsky.. ty

Posted By :-
Jul 25, 11:21:28 PM 0 11046
electronics and communication
i am in 4th year

Posted By :-
Jun 10, 6:02:44 AM 0 9745
about bipolar device

Posted By :-
Feb 13, 2:11:36 PM 2 18836
h parameters of transister
i want h parameters of transister

Posted By :-
Feb 11, 7:52:45 AM 3 26049
very good tutorials
the explanations r very easy to understand

Posted By :-
Dec 7, 8:38:09 PM 0 9900
the explanation was nice...more of these explanations on other topics would be of much help and is expected urgently...

Posted By :-
Dec 2, 10:32:29 PM 0 10793
i want to simple way abt all the diode n jfet

Posted By :-
Jun 4, 10:25:28 AM 1 14694
Thanks for nice tutorials
Thanks for nice tutorials

Posted By :-
Nov 26, 8:29:06 AM 0 10160

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