diodes Archive

Zener diode as a voltage regulator

When the zener diode is operated in reverse biased condition at breakdown voltage, the reverse resistance drops to a very low value and the effort of a rapid resistance in zener current together with a rapid decrease

How zener breakdown is work?

The zener breakdown is occurs in PN junctions which are heavily doped. The heavily doped junctions have a narrow depletion region. The zener breakdown is observed in the zener diodes having breakdown voltage is less than 5V or

Avalanche photodiode

Avalanche photodiode is basically a PN junction diode which operates in the avalanche breakdown region. Its structure is similar to the PIN photodiode. It is a highly sensitive semiconductor electronic device that utilizes the photo electric effect

Advantages and disadvantages of avalanche photodiode

There are some important advantages of avalanche photodiode are given below, The main advantage of the avalanche photodiode is it has a greater level of sensitivity. There are some important disadvantages of avalanche photodiode are given below,

Difference between PN junction diode and photo diode

Following are the difference between PN junction diode and Photo diode: PN junction diode Photo diode The PN junction diode is operated in forward biased mode. The photo diode is operated in reverse biased mode. It is

Application of tunnel diode

There are some applications of tunnel diode are given below, The tunnel diode is used as logic memory storage device. The tunnel diode is used in relaxation oscillator circuits. It is used as an ultra high speed

Difference between Ideal diodes and Practical diodes

Difference between Ideal diodes and Practical diodes Ideal diodes Practical diodes Ideal diodes act as perfect conductor and perfect insulator. Practical diodes cannot act as perfect conductor and perfect insulator. Ideal diode draws no current when reverse

What is a PN junction diode?

A P type semiconductor is suitably joined to on N type semiconductor under suitable condition by using a special technique to form a junction then the device constructed is a PN junction diode semiconductor diode. The PN

Working principle of PN junction diode

Forward bias of PN junction diode The diode is forward biased. The positive terminal of the battery is connected to the anode of a diode and negative terminal to the cathode. When battery is not connected, there

V-I characteristic of tunnel diode

It immediately conducts the diode when forward biased voltage is applied. The current is increases to its peak point value (Ip). The diode currents starts decreasing till it reaches its minimum value called valley point current (Iv)