What is the difference between diode and transistor

Key Difference: A diode is a type of electrical device that allows the current to move through it in only one direction. It consists of an N-type semiconductor and a P-type semiconductor that are placed together. Comparison between Diode and Transistors: Diode Transistor Definition A diode is a type of electrical device that allows the current to move through it in only one direction. Uses Clipping and Clamping - To protect the circuits by putting limitations on the voltage Voltage rectifier — Turing AC into DC Voltage Multipliers Non-linear mixing of two voltages Amplifiers — A relatively weak signal that is fed into the base gets amplified into a much larger current flowing from the emitter to the collector.

Switches — A certain type of signal into the base can be used to cut off the the current flowing from the emitter to the collector. V slightly different than jd's, negative resistance! Veractor junction cap. A transistor has 3 regions, and must have 3 leads. Generally, diodes are used for rectification, clipping, clamping, circuit protection, voltage regulation , voltage multiplication, Solar panels, LEDs, Voltage spike suppression, etc.

A transistor is a basic component of an electronic and logic circuit due to its high switching speed. Although it is also widely used for amplification and controlling of power supplied. Your email address will not be published. Notify me of follow-up comments by email. Notify me of new posts by email. Table of Contents. Electrical Technology 0 7 minutes read.

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A Semiconductor device that allows current flow in only one direction. A semiconductor device is capable of switching and transfer voltage between low resistance circuit and high resistance circuit. The diode is made of two layers of P-type and N-type semiconductor. It has two terminals called anode and cathode. It has three terminals named emitter, base and collector. There is only 1 PN Junction. There are 2 PN junctions i. Collector-Base and Base-Emitter junctions.

It is mainly used for rectification of AC into DC. It is only used for switching and amplification. It is a unidirectional switch. It is a switch as well as an amplifier. It performs uncontrolled Switching. The emitter is largely doped so it can send a large amount of charge carrier to the base region. The base has a small area and less doped so charges can move to the collector. A collector is the third region of the transistor and has a large area than the other two since it can dissipate heat generated at the base-collector junction.

That is a detailed post about the difference between diode and transistor if you have any query ask in comments. Thanks for reading.

Therefore, the majority charge carriers will flow from emitter to base and then base to collector. The larger the size of the collector, the more will be the charge carriers it collects and the heat dissipation will also take place easily.

The diode is a two-terminal unidirectional device while the transistor is a three terminal device which passes current from high resistance region to low resistance region via the base. A diode is used in various applications of electronics such as in rectifier, clipper, clamper, voltage multiplier, switches etc.

A diode act as a switch. Transistor can act as a switch and also as an amplifier. The application creates the major difference between diode and transistor. Diodes are of various types such as zener diode, PIN diode, photodiode , light emitting diode etc. I like how the topic is well summarized and it is easy to understand for beginners like me. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment.

Key Differences Between Diode and Transistor The crucial difference between diode and transistor is that the diode is two terminal device while the transistor is the three terminal device.

PN junction diode consists of one depletion region , i. The diode is considered as a switch as it can perform switching, but the transistor can perform switching as well as amplification.