What is Diode and How it Works

What is Diode and How it Works

Published by: Gabriella

On: 13 Nop, 2018

Viewed:331 times - 15 hour, 4 minute, 27 second ago

Downloaded: 0 times -

Category: Circuit

What is Diode and How it Works Rating:
3
12 out of 100 based on 241 user ratings

A diode is a 2 lead semiconductor that acts as a one way gate to electron flow. Diode •A diode is a 2 lead semiconductor that acts as a one way gate to electron flow. – Diode allows current to pass in only one direction. A pn-junction d...

A diode is a 2 lead semiconductor that acts as a one way gate to electron flow. Diode •A diode is a 2 lead semiconductor that acts as a one way gate to electron flow. – Diode allows current to pass in only one direction. A pn-junction diode is formed by joining together n-type and p-type silicon.
• In practice, as the n-type Si crystal is being grown, the process is abruptly altered to grow  p-type  Si  crystal.  Finally,  a  glass  or  plastic  coating  is  placed  around  the  joined crystal.
• The p-side is called anode and the n-side is called cathode.
• When the anode and cathode of a pn-junction diode are connected to external voltage such that the potential at anode is higher than the potential at cathode, the diode is said to be forward biased.–In a forward-biased diode current is allowed to flow through the device.
• When potential at anode is smaller than the potential  at  cathode,  the  diode  is  said  to be reverse biased. In a reverse-biased diode current is blocked
what is diode and how it works 1.jpg
Water Analogy of Diodes
what is diode and how it works 2.jpg
When a diode is connected to a battery as shown, electrons from the n-side and holes from the p-side are forced toward the center by the electrical field supplied by the battery. The electrons and holes combine causing the current to pass through the diode.  When a diode is arranged in this way, it is  said to be forward-biased.
what is diode and how it works 3.jpg
A diode’s one-way gate feature does not work all the time. Typically for silicon diodes, an  applied voltage of  0.6V or greater is needed, otherwise, the diode will not conduct. This feature is useful in forming a voltage-sensitive switch. I-V characteristics for silicon and germanium diodes is shown below.
what is diode and how it works 4.jpg

Related Posts

Switch-on delay and DC protection for Hi-Fi amplifiers - the ideal loudspeaker protection circuit

The circuit consists of a DC detector (T1-4), which was not developed by me, and a controllable flip-flop with automatic reset (T5-8) that delays switching on and delaying the loudspeaker relays im...

Reflow Soldering Oven with a Stencil and Soldering Paste

In this article I will talk about the transformation of a 35 € oven into a reflow soldering oven, i.e. the type of soldering that allows you to obtain quality assembled PCBs with a stencil and...

Solving problems commonly occur at Alternator and Regulator

How to determine the failure in an electrical system must through some steps. To get the best result to need to check and clean up all connections available in the electrical system before searchin...

Recognize 5 more important things in car electrical system

Based on the definition of electrical system or wiring diagram is a circuit that works use proper electricity by shifting electron from one power to another object for recent purpose. Better you kn...

Comprehensive theory of car electrical system - Definition, Components and Circuits

A car is not only engine, but also frame or chassis and electrical. Although, not main component but car engine need another component to works it needs electrical system to make combustion. For ex...

How ignition coil works on your car

Ignition system in modern era didn't need a distribution or commonly known as distributorless ignition system (DIS), using ignition more than one or each cylinder served with one ignition coil said...

As the fastest growing demand of circuit and wiring diagram for automotive and electronics on internet based on different uses such as electronic hobbyists, students, technicians and engineers than we decided to provide free circuit and wiring diagram base on your needed.

To find circuit and wiring diagram now a day its easy. E-learning through internet as a right place to search an exact circuit and wiring diagram of your choice and it's much fun and knowledgable. On internet you will find thousands of electronic circuit diagrams some are very good designed and some are not. So you have to modify them to make them according to your needs but some circuits are ready to make and require no changes.

There are many categories of circuit and wiring diagrams like automotive, audio circuits, radio & RF circuits, power supply circuits, light circuits, telephone circuits, timer circuits, battery charger circuits etc. There are many types of circuit and wiring diagrams some are very easy to build and some are very complicated, some are so small and some contain huge list of parts.

We provides free best quality and good designed schematic diagrams our diagrams are free to use for all electronic hobbyists, students, technicians and engineers. We also provides a full educational system to students new to electronics. If you are new to electronics you are a student or a electronic hobbyist and want to increase your knowledge in electronics or want to understand electronics in a very easy way so this is the right place for you we provide electronics beginner guide tutorials to easily understand complicated electronic theory. Our mission is to help students and professionals in their field.