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Difference Between Pn Junction Diode And Zener Diode Pdf

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A normal p-n junction diode allows electric current only in forward biased condition. When forward biased voltage is applied to the p-n junction diode, it allows large amount of electric current and blocks only a small amount of electric current. Hence, a forward biased p-n junction diode offer only a small resistance to the electric current.

Difference Between P-N Junction Diode and Zener Diode

A diode is a semiconductor device which conducts in one direction only. A Zener diode is a semiconductor device which conducts in forward biased as well as reversed biased. A normal diode if operated in reversed biased will get destroyed. Thus, a normal PN junction diode is considered as a unidirectional device. On the contrary, Zener diode is designed in a way that it can conduct in a reversed biased mode without getting damaged.

Selector Lineup; Documents; Search. The Zener diode is a form of semiconductor diode that is widely used in electronics circuits as a voltage reference. Transistors 3. The Zener diode has a unique property that offers a simple, low-cost solution to this problem. Power diodes V,A 2.

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Since a junction forms between a P type and N type material it is called as P-N junction. One terminal of p-n junction diode is Anode and other is cathode. If the applied potential difference is more than the potential barrier, some holes and free electrons enter the depletion region. From the foregoing discussion the i-v characteristics of a p-n junction diode can be drawn as shown in Fig 2. The distance from one side of the barrier to the other side is called the width of the barrier, which depends upon the nature of the material. A PN junction is the simplest form of the semiconductor diode.

Difference between PN junction diode and zener diode

Basic Electronics , Electronics. The main difference between PN Junction Diode and Zener Diode is, PN Junction diode conducts current only in one direction at normal condition but Zener Diode can conduct current in both direction at normal condition. There is little constructional difference between PN junction diode and Zener diode.

The major difference between PN junction and the Zener diode is that the PN junction diode allows current to pass only in the forward direction , whereas the Zener diode allows the current to flow both in the f orward and the reversed direction. The other differences between the PN-junction and Zener diode are shown in the comparison chart. The PN junction diode is used for rectification purpose because it allows the current to flow only in one direction. It is a type of switch which only allows the forward current to pass through it.

Diode is the simplest semiconductor element, which has one PN-connection and two terminals. It is a passive element because the current flows in one direction. The Zener diode, on the contrary, allows flowing of the reverse current. In n-type of semiconductor electrons are the main carriers of the charging, while in p-type semiconductor, the main carriers are the holes.

The trimmer resistance is varied, so that the voltage at cathode of the D9 diode changes.

Main Difference Between PN Junction Diode and Zener Diode

If this external voltage becomes greater than the value of the potential barrier, approx. One of the junctions of a transistor must be forward biased and other must be reverse biased when it operates. The forward and reverse biasing is differentiated below in the comparison chart. Forward Biased … If the reverse-biasing voltage is sufficiently large the diode is in reverse-breakdown region and large current flows though it. In reverse bias, the connections are interchanged. This voltage cancels the potential barrier and provides the low resistance path to the flow of current. However, when the battery terminals are reversed, the p-n junction almost completely blocks the current flow.

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Zener diode


Makenna L. 30.03.2021 at 01:31

Summary of P-N Junction Diode and Zener Diode · P-n junction diodes are made of two (p and n) semiconductor layers, permitting current to flow.

Petra Z. 05.04.2021 at 12:04

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Lola R. 05.04.2021 at 12:17

Following are the difference between PN junction diode and zener diode: PN junction diode Zener diode PN junction is not properly doped to.

Gundelinda S. 07.04.2021 at 00:04

A Zener diode is a special type of diode designed to reliably allow current to flow "backwards" when a certain set reverse voltage, known as the Zener voltage , is reached.