There are single and double thyristors. One-way thyristors are generally used in the over-current and over-voltage circuits of color TVs. Bi-directional thyristors are mainly used in AC adjustment circuits. In layman's terms, such as AC power control in automatic washing machines, and light source adjustment of desk lamps, etc.

Then the triac can actually be an AC switching device. In the home appliance industry, it is mainly a control device. With the continuous development of semiconductor technology, the scope of application is now wider and it plays a very good role in the field of AC frequency conversion. The way the bidirectional thyristor works is to add a parallel circuit to the ordinary thyristor. Then the characteristics of this bidirectional thyristor can see that this pulse can make the tube conductive. When selecting a triac, you must clearly see the various parameter requirements, such as what the rated voltage is, so the rated voltage of this device is usually 2 to 3 times, so you must pay attention to this aspect and what the peak voltage of the current is, and you must also see it clearly to avoid breakdown problems caused by current overload.
The installation environment of the triac is basically on the radiator, that is, in order to reduce the thermal resistance, thermal conductive silicone grease must be applied. After all, the load is relatively large, and the method of fixing it to the radiator is basically bolting or rough jointing. However, it is recommended that bolting is better, so that the heat dissipation will be better. Pay attention to the pressure during the installation process to avoid damage. Be sure to pay attention to the pressure during installation to avoid poor contact, so be sure to fix it first and then solder the leads.
In addition, the parameters of thyristors have also developed rapidly in industrial use, and the application market is even more impressive. After all, this kind of bidirectional thyristor can achieve better control of AC power. For example, in the field of automation, electromechanical fields, and home appliances, thyristors can be seen flooding them, so this kind of bidirectional thyristor plays a very good role in motor control.

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