The field of application of thyristor is still very wide. It is used in the home appliance industry and industrial appliances. This kind of thyristor is an active switching element. It is in the non-pass state at ordinary times. It will remain in the on state until a control signal triggers it. Until the evacuation signal, it will still maintain the pass state. To cut off, a reverse voltage or current may need to flow, and it can be cut off below a certain value.

There are still many practical circuit applications for silicon controlled thyristors. Let's take a look at how the DC trigger circuit and phase trigger circuit work. DC trigger circuits are commonly used in TV sets because they are an overvoltage protection circuit that can trigger the thyristor as long as the voltage is too high. The board circuit allows the fuse to blow, which plays a real protective role. Inspectors can also use this feature to better inspect the circuit. Then the phase trigger circuit is a kind of AC circuit that uses the phase of the control signal to control, such as the loop control trigger signal. If the number of fields is small, the power of the load will be greater. If the resistance value is large, the trigger signal will be displaced and the load power will become smaller.
SCRs can control high-power equipment with low power in automatic control systems, especially in AC and DC motor speed regulation systems. Let's take a look at what this voltage regulation circuit looks like. It will play the role of voltage regulation in the rectifier circuit. It is precisely because after the voltage regulator is connected to the power supply, it passes through the resistor. And the rectification of the diode forms a pulsating DC voltage at both ends of the thyristor. This voltage obtains the power obtained by the voltage drop of the resistor. When the AC power is on the positive half-axis, the capacitor is charged. When the charge reaches the peak pressure, the capacitor connected to the transistor will also be discharged. Then, the control of the thyristor by the pulse signal will cause The thyristor is turned on. If the thyristor is turned off when the head pad passes the zero point, it will charge the capacitor when the AC current is on the negative half axis. Such a power adjustment effect is still very good.

Company phone number: +86-0755-83044319
Fax/FAX: +86-0755-83975897
Email: 1615456225@qq.com
QQ: 3518641314 Manager Li

QQ: 332496225 Manager Qiu

Address: Room 809, Building C, Zhantao Technology Building, No. 1079 Minzhi Avenue, Longhua New District, Shenzhen