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OMO Take you through the types and functions of diodes

Release on : Jun 13, 2019

A diode is a common electronic component.Its main feature is that it has a single conductive characteristic,that is,the current can only pass from one direction,and the reverse resistance is large,which is equivalent to an open circuit.

rectifier diode
The rectifier diode is the most basic diode. It has unidirectional conductivity. For AC power, it can only pass from the positive pole, but not from the negative pole. Therefore, in principle, the diode converts the alternating current into direct current, that is, rectification. These diodes are available in the RU series, V series, 1SR series, and more. Higher ones can be considered for rectification with Schottky diodes.

led
Many people are familiar with LEDs. Some of the lights in the home are made of light-emitting diodes. At the same time, it has another name, LED, etc. The principle is to make visible light by combining electrons and holes. of. As the name implies, the role of LEDs is to illuminate. Although the price is low, the conversion efficiency is high. Most of the lighting tools are now made of LEDs. Common types are patch, light strips, table lamps, and the like.

Zener diode
The principle is to use the reverse breakdown state of the PN junction. Since the diode changes greatly in the reverse breakdown region and the voltage changes very little, the use of this property becomes a Zener diode, and it has another name - Zener diode. In the circuit, even if the current fluctuates greatly, the Zener diode can make the voltage basically stable. Zener diodes are graded and can be used in series if a higher voltage is required.

Schottky diodes
The principle is based on the metal-semiconductor junction principle formed by the contact of metal with a semiconductor. It is a low-power, ultra-high-speed diode. Its main feature is that the reverse recovery time is short. The disadvantage is that it is easy to become bigger as the temperature rises. Applications are far superior to finishing diodes, and some power switches have Schottky diodes.

Detection diode
The principle is a device for detecting a low-frequency signal superimposed on a high-frequency carrier, and the main function is to take out a low-frequency signal or an audio signal in a high-frequency or intermediate-frequency radio signal by using conductivity, and is applied to a radio, a recorder, and a television. In the small signal circuit of equipment and the like, the operating frequency is high and the processing signal amplitude is weak.

Schottky diodes
The principle is based on the metal-semiconductor junction principle formed by the contact of metal with a semiconductor. It is a low-power, ultra-high-speed diode. Its main feature is that the reverse recovery time is short. The disadvantage is that it is easy to become bigger as the temperature rises. Applications are far superior to finishing diodes, and some power switches have Schottky diodes.

Detection diode
The principle is a device for detecting a low-frequency signal superimposed on a high-frequency carrier, and the main function is to take out a low-frequency signal or an audio signal in a high-frequency or intermediate-frequency radio signal by using conductivity, and is applied to a radio, a recorder, and a television. In the small signal circuit of equipment and the like, the operating frequency is high and the processing signal amplitude is weak.

The above is the type and function of the diodes introduced by OMO. It must be said that the diodes have been fully integrated into our lives. The most common ones are LED lights, which not only have good luminous effects, but also It can effectively protect the eyes, and the types of diodes are more than the above, as well as switching diodes, isolation diodes, and contact diode lamps.

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