Define Diode In Physics

A diode is a specialized electronic component with two electrodes called the anode and the cathode. A zener diode is a p n junction semiconductor device designed to operate in the reverse breakdown region.

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Rectification is the process in which an alternating current is forced to only flow in one direction.

Define diode in physics. It has low ideally zero resistance in one direction and high ideally infinite resistance in the other. A light emitting diode led is a semiconductor light source that emits light when current flows through it. Even though they transmit current in a single direction the way with which they transmit differs.

A diode is an electrical device that permits current to flow in one direction only. A diode is a two terminal electronic component that conducts current primarily in one direction asymmetric conductance. Done using diodes since diodes could only allow current to flow in one direction only.

Some diodes are comprised of metal electrodes in a chamber evacuated or filled with a pure elemental gas at low pressure. Any of various solid substances such as silicon or germanium that conduct electricity easily than insulators but less easily than conductors. Electrons in the semiconductor recombine with electron holes releasing energy in the form of photons.

A diode is a device which has two active electrodes and two terminals and allows the current to pass only in a single direction. The breakdown voltage of a zener diode is carefully set by controlling the doping level during manufacture. The wavelength of the light produced depends on the energy band gap of the semiconductors used.

When a p type semiconductor is joined with an n type semiconductor a junction is formed between the p type and n type semiconductor. In light emitting diode physics the recombination of electrons and electron holes in a semiconductor produce light or infrared radiation a process called electroluminescence. Semiconductors like silicon and germanium are used to make most of the diodes.

In ordinary diodes current is produced when the applied voltage is greater than the built in voltage of the depletion region. In a normal p n junction diode a p type semiconductor and an n type semiconductor are used to form the p n junction. Semiconductors are able to do this because they have a small number of electrons that have escaped from the bonds between the atoms leaving spaces.

But in tunnel diodes a small voltage which is less than the built in voltage of depletion region is enough to produce electric current. Most diodes are made with semiconductor materials such as silicon germanium or selenium. These devices are used to protect circuits by limiting the voltage and also turn ac into dc.

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