Due to the flow of reverse current the width of the junction barrier increases. When this applied reverse bias voltage is increased gradually at a certain point a rapid increase in the reverse current can be observed. This is known as Junction breakdown. The corresponding applied reverse voltage ...
Due to forward bias, majority charge carriers in both regions get repelled (because positive voltage is applied to P region and negative to N region) and enter into the depletion region. Hence immobile ions get back lost carriers become neutral and move to undepleted region hence width of the...
A Zener diode is a type of pn junction diode. Zener diodes are used in the breakdown region (yield region) by applying a voltage in the opposite direction to normal pn junction diodes.
So on the left (small diagram) where the diode symbol was used Va is also a external voltage source. Right?? So to force diode into conduction we need to connect an external voltage source (Va in the diagram) in the opposite direction to the "depletion region battery" (Vb on the big...
Zener Effect is the category of the electric failure (breakdown) that exits in reverse biasing PN junction the strong statice field allows the electrons to move from the valance band to the conductive band of a semiconductor. Its name is due to the use of this factor in the operation of th...
A Zener diode is a type of pn junction diode. Zener diodes are used in the breakdown region (yield region) by applying a voltage in the opposite direction to normal pn junction diodes.
only drawback of these diodes. avalanche diode this diode belongs to a reverse bias type and operates using the avalanche effect. when voltage drop is constant and is independent of current, the breakdown of avalanche takes place. they exhibit high levels of sensitivity and hence are used for ...
A diode is a semiconductor device with one PN junction or alternatively one metal-semiconductor junction. It has two terminals called anode and cathode. It has the property of a switch that allows current to flow or not to flow depending on the direction of the voltage applied between the ano...
The main characteristics of the diode is unidirectional conductivity, that is, under the action of t
A Zener diode is a type of pn junction diode. Zener diodes are used in the breakdown region (yield region) by applying a voltage in the opposite direction to normal pn junction diodes.