How light-activated thyristors are used in application fields

A Light light-activated thyristor (LAT) is a special semiconductor device that can trigger conduction through an optical signal. Unlike conventional thyristors, light-triggered thyristors do not require a gate trigger voltage to control turn-on but rather to control the carrier density inside the semiconductor through the intensity and distribution of incident light so as to achieve the conduction of the device. Optical trigger thyristors have the advantages of fast response, voltan tahan tinggi, arus tinggi, dll., and are widely used in power electronics, optical communication, dan bidang lain.

The operating principle of the light-activated thyristor

Light Activated Thyristor is a semiconductor device with photoelectric triggering characteristics. Its core part is a PNPN structure consisting of four semiconductor layers. Dalam keadaan biasa, the device is blocked. When excited by light, photogenerated carriers are excited, and the generated carriers move under the action of an electric field to form an electric current. This current changes the electric field distribution inside the device, causing the device to change from a blocking state to a conducting state.

The process of light-activated thyristor achieving conduction by controlling the carrier density is similar to that of light-controlled thyristor. It also uses light signals to excite carriers, thereby changing the conduction state of the thyristor. Secara khusus, when a light-activated thyristor is exposed to light, the light energy will excite photogenerated carriers, causing the carrier density of the thyristor to change. This change will affect the volt-ampere characteristics of the thyristor, making it easier to conduct the device. When the light intensity increases, the number of photogenerated carriers increases, and the conduction ability of the thyristor increases accordingly.

Typical application areas of the light-activated thyristor

1) Laser power supply: In the laser power supply, the Light Activated Thyristor is a key component used to control the output power of the laser. It enables fast and precise power control, thereby improving laser performance and stability.

2) Pulse Power Supply: In the pulse power supply, an activated Thyristor is used to generate high-energy pulses. By controlling the time and waveform of its on and off, the energy and output of the pulse can be precisely controlled.

3) Photoelectric control: In the photoelectric control system, an activated Thyristor, as a photoelectric sensor device, can convert optical signals into electrical signals to achieve precise photoelectric conversion and control.

4) High-frequency inverter: In a high-frequency inverter, an activated Thyristor, as a switching element, can achieve high-speed and high-precision switching operation, thereby improving the efficiency and stability of the inverter.

5) Solar photovoltaic system: In solar photovoltaic systems, an activated Thyristor can be used to improve the conversion efficiency and stability of photovoltaic cells, thereby improving the performance of the entire system.

Development

As an advanced semiconductor device, an activated Thyristor has the advantages of high voltage, large current, fast response, kecekapan tinggi, and strong reliability. It is widely used in laser power supply, pulse power supply, photoelectric control, high-frequency inverter, and solar photovoltaic systems. The field has broad application prospects. Dengan perkembangan berterusan teknologi elektronik kuasa, it is believed that Light Activated Thyristor will play a more important role in the future and provide strong support for the development of green energy technology. Let us look forward to more breakthroughs and innovations in the future.

Supplier

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