Principle behind zener diode working as stated above the basic principle behind the working of a zener diode lies in the cause of breakdown for a diode in reverse biased condition. Special techniques are applied in the fabrication of zener diodes to create the required properties. Zener diode barrier principle the zener diodes limit the fault voltage to the hazardous area. But ordinary pn junction diode connected in reverse biased condition is not used as zener diode practically. The zener diode barrier works by diverting potentially dangerous energy to ground before it can reach the hazardous area. Zener diode working, characteristics and application as. Zener diode is a special kind of diode which permits the flow of current in the forward direction as well as in reverse direction when the voltage is above a certain voltage known as breakdown or zener voltage. Electronic devices are usually small and can be grouped together into packages called integrated circuits. Zener diode barrier principle instrumentation tools. Zener diode barrier principle the zener diodes limit the.
A zener diode is similar to conventional pn junction diode except that it is properly doped to achieve sharp breakdown voltage. Hbd854 zener theory and design considerations handbook. The diode is named after clarence melvin zener, the man who discovered this peculiar effect. A zener diode typically suffers a breakdown at a marginally lower voltage than a conventional diode does. Zener breakdown occurs due to high reverse voltage. In normal diodes, the breakdown voltage is very high and the diode gets damaged totally if a voltage above the breakdown diode is applied, but in zener diodes, the breakdown voltage is not as high and does not lead to permanent damage of the zener diode if the voltage is applied. A zener diode is a specially designed, highly doped pn junction diode. Friends is video me ham zener diode ke working principle and construction ke bare me discuss karenge. Working principle of zener diode zener diode is basically like an ordinary pn junction diode but normally operated in reverse biased condition.
Zener diode ak voltage regulator diode hai joki voltage regulat karne ke. Electronic devices are components for controlling the flow of electrical currents for the purpose of information processing and system control. This manual was prepared to acquaint the engineer, the equipment designer and manufacturer, and the experimenter with the fundamental principles, design characteristics. There are two types of mechanism by which breakdown can occur at reverse pn junction that are avalanche and zener breakdown. When the high reverse voltage is applied the width of depletion layer increases. Normally there are two types of breakdown zener and avalanche. In our previous articles, we explain in detail about diodes, pn junction diode, semiconductors etc. The zener diode working principles and its various.
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