Difference Between Diode and Rectifier

A diode is a nonlinear circuit element. A diode is an electronic component that allows the current to flow in only one direction. It is a two-terminal semiconductor device. The rectifier is a device that is used to convert an AC voltage to a DC voltage. A diode is used as a switch, and a rectifier is used to to the conversion.

Differences between a Diode and a Rectifier

Let us look at more differences between them to understand them better.

Diode Rectifier
A diode conducts current when it is forward biased and blocks the flow of current when reverse biased. A rectifier circuit consists of a diode, a step-down transformer and a filter circuit which collectively convert AC to DC.
The current-carrying capability is low in a diode. The current-carrying capability is high in a rectifier.
Diodes are used in switches, clampers, clippers, etc. Rectifiers are used in computers, batteries, etc.
Zener diode, photodiode, etc. are the different types of diodes.

Single-phase rectifiers and three-phase rectifiers are the two types of rectifiers. Single-phase rectifiers are further divided into half-wave and full-wave rectifiers.

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The difference between a diode and a rectifier should be understood clearly as it is an important and fundamental concept in electronics. To know more about Zener diode, photodiodes, etc., visit BYJU’S.

Frequently Asked Questions – FAQs

What is a diode?

A diode is an electronic component that allows the current to flow in only one direction. It is a two-terminal semiconductor device.

What is a rectifier?

The rectifier is a device that is used to convert an AC voltage to a DC voltage.

What is a half-wave rectifier?

A half-wave rectifier is the simplest form of the rectifier and requires only one diode for the construction of a halfwave rectifier circuit.

Write some applications of a diode?

Following are the applications and uses of the diode:

  • Diodes as a rectifier
  • Diodes in the clipping circuit
  • Diodes in clamping circuits
  • Diodes in logical gates
  • Diodes in reverse current protection

What is a Zener diode?

A Zener diode is the most useful type of diode as it can provide a stable reference voltage. These are operated in reverse bias and break down on the arrival of a certain voltage. If the current passing through the resistor is limited, a stable voltage is generated. Zener diodes are widely used in power supplies to provide a reference voltage.
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