Home Game live Financial community 5G technology Celebrity Fashion icon MPV Smart home Cultural Sports Education House Hotel Kids life Food Business News health

Thyristor switch

06-13

Thyristors, also known as silicon controlled rectifier, were previously referred to as silicon controlled rectifier. In 1957, Ge developed the world's first thyristor product and commercialized it in 1958. In terms of performance, the thyristor not only has single conductivity, but also has more valuable controllability than the silicon rectifier. It has only two states: on and off. The following describes the switching characteristics, working principle, main parameters and applications of thyristors.

Working principle: when a reverse voltage is applied between the anode and cathode of the thyristor, two PN junctions are in the reverse bias. When a forward voltage is applied between the anode and cathode, the middle PN junction is in the reverse bias. Therefore, the thyristor will not be turned on (called blocking).

During the operation of the thyristor, its anode (a) and cathode (k) are connected with the power supply and load to form the main circuit of the thyristor. The gate g and cathode K of the thyristor are connected with the device controlling the thyristor to form the control circuit of the thyristor.

Switching characteristics of thyristor:
1) At the beginning, if the control pole G is not applied with voltage, the thyristor will not conduct regardless of whether the anode a is applied with forward or reverse voltage, which indicates that the thyristor has positive and reverse blocking ability.
2) The thyristor can be turned on only when the positive voltage is applied to the anode a and control pole g of the thyristor at the same time, which are two conditions that must be met for the thyristor to be turned on at the same time.
3) After the thyristor is turned on, its control pole g loses its control function. To restore the blocking state of the thyristor, the anode current must be reduced to a certain value (less than the maintenance current).

Chengdu Jiurong Power Technology Co., Ltd. was established on April 8, 2016, with its registered address at No. 305, floor 3, building a, high tech trade center, Shenxianshu North Road, high tech Zone, Chengdu, and its legal representative is Bai Bing. The business scope includes power technology development, technology transfer and technical consultation; Production (limited to branches operating in the Industrial Park) and sales: electronic products, computers and peripheral equipment, electronic components, and power equipment; Network engineering design and construction (engineering shall be operated with qualification license); Contract energy management. (for projects subject to approval according to law, business activities can only be carried out after approval by relevant departments). Chengdu Jiurong Power Technology Co., Ltd. has invested in one company.

 

 Online Store 

Bing Bai

13980589917@163.com

hardbbxx@gmail.com

Disclaimer: This article is reproduced from other media. The purpose of reprinting is to convey more information. It does not mean that this website agrees with its views and is responsible for its authenticity, and does not bear any legal responsibility. All resources on this site are collected on the Internet. The purpose of sharing is for everyone's learning and reference only. If there is copyright or intellectual property infringement, please leave us a message.
┬ęcopyright 2009-2020 Nrc Handelsblad      Contact Us   SiteMap