What is Diode and How it Works

What is Diode and How it Works

Published by: Scarlett

On: 13 Nop, 2018

Viewed:506 times - 1 day, 3 hour, 40 minute, 38 second ago

Downloaded: 0 times -

Category: Circuit

What is Diode and How it Works Rating:
3
42 out of 100 based on 298 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

MAKING SIX TRANSSISTOR RADIO

MAKING SIX TRANSSISTOR RADIO
Learning Objectives: After studying this chapter, you should be able to:
• describes the process of making a six transistor radio;
• make a six...

SIX TRANSISTOR RADIO PARTS

SIX TRANSISTOR RADIO PARTS

A. Receiving Antenna
B. Tuning
C. Oscillator
D. Microphone Tool Sound (Loudspeaker)
E. Amplifier MF (Middle Frequency) Electric Current Source...

TESTING THREE TRANSISTOR RADIO COMPONENTS

TESTING THREE TRANSISTOR RADIO COMPONENTS

A. Testing of Fixed Resistors
B. Testing of Paper, Mica, and Cramp capacitors
C. Testing of Electrolytic Condensers
D. Testing Diode...

MAKING THREE TRANSISTOR RADIO

MAKING THREE TRANSISTOR RADIO

Learning Objectives: After studying this chapter, you should be able to:
• describes the process of making a three transistor radio;
• make...

TRANSISTOR THREE RADIO PARTS

TRANSISTOR THREE RADIO PARTS

A. Antenna
B. Tuning (Tuner Circle)
C. Detector
D. Sound Amplifier
E. Final Brace
F. Sound Tool (Loudspeaker)
G. Source of electri...

Types of Transformers (Transformers)

Types of Transformers (Transformers)

1. Transformer (Transformer) Adapter

This transformer is useful for converting AC to DC currents through the primary and secondary windings. Usu...

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.