‘A diode is a two-terminal semiconductor gadget that conducts current in a circuit. The obstruction of one course is very nearly zero and the opposition of the other way is a lot higher.

It has two terminals, one anode, and the other a cathode. Diodes are for the most part made of semiconductor silicon and germanium. A diode is made by interfacing a P-type semiconductor and an N-type semiconductor.

The intersection of two semiconductors is known as the P-N intersection. Utilized in diode amendment, adjustment, turn around voltage assurance, high voltage security, cinching, cutting, rationale circuit, and so forth. The diode is made by setting two unique locales one next to the other in the semiconductor diode, p-area, and n-district. The p-area of the diode is known as the anode and the n-locale is known as the cathode.

This diode just performs forward predisposition conditions. At the point when the diode doesn’t direct conduction in turn-around biasing, it acts like an open circuit (obstruction limitlessness) and as of now doesn’t stream. Since the diode conveys current in one bearing, it is known as a one-way switch.

The primary capability of a typical diode is to convey current in a sending bearing. Current, then again, interferes with the current when it streams in the opposite bearing. How the diode goes about as a one-way valve.

Different terms related to diodes:

Forward Biasing

Forward biasing is the current that flows easily through the p-n junction. Forward biasing is done by connecting the positive edge of the source in the P-type electrode and the negative edge of the source in the N-type electrode.

Reverse Biasing

Reverse biasing is the current that cannot easily flow through a p-n junction. Reverse biasing is done by connecting the negative edge of the source in the P-type electrode and the positive edge of the source in the N-type electrode.

Breakdown Voltage

By reverse biasing the p-n junction diode, the p-n junction breaks after exceeding a certain voltage as the reverse voltage continues to increase and excessive amounts of current begin to flow. This state of the diode is called breakdown and the voltage at this time is called the breakdown voltage. The breakdown voltage of diodes of different ratings is different.


Knee Voltage or Offset Voltage

The minimum voltage at which the p-n junction diode conducts forward bias is the ni-voltage. Silicon has a Ni-voltage of 0.7 and Germanium has a Ni-voltage of 0.3.

Peak Inverse Voltage or PIV

The maximum reverse voltage of the diode is the peak inverse voltage

Maximum Reverse Repetition Voltage or MRRV

A.C. at the input of a diode. The maximum number of times the reverse bias is obtained per second when supplied is the maximum reverse repeat voltage. This is the A.C. Depending on the frequency.

Different types of diodes

  • Small Signal Diode
  • Large Signal Diode
  • Zener Diode
  • Light Emitting Diode or LED
  • Photodiode
  • Laser Diode
  • Constant Current ‘Diode
  • Schottky Diode
  • Shockley Diode
  • Step Recovery Diode
  • Tunnel Diode
  • Varactor Diode
  • Transient Voltage Suppression Diode or TVS Diode
  • Gold Doped Diode
  • Super Barrier Diode
  • Peltier Diode
  • Crystal Diode
  • Avalanche Diode
  • Silicon Controlled Rectifier
  • Vacuum Diode
  • PIN Diode
  • Point Contact Device
  • Gunn Diode

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By techbuz