There are differences between thyristors and thyristors in terms of structure, working principle, current power, application scenarios, characteristics, and control methods. Here is a detailed introduction:

Structure: Thyristors are usually composed of four regions, namely P-type region, N-type region, P-type region, and N-type region; The thyristor also consists of four regions, but only two regions are used to connect the main electrode and there is no blocking electrode.

Working principle: The working principle of thyristor is similar to that of diode, with controllable conduction characteristics, requiring forward voltage and control voltage to conduct; After applying a forward voltage to the control electrode, the thyristor can start conducting. Once conducting, it can maintain a conducting state as long as the forward voltage is above a certain threshold.

Current power: Thyristors are suitable for smaller currents and lower reverse voltages; Controllable silicon is suitable for higher currents and voltages.

Application scenarios: Thyristors are suitable for power switches that require high current control, DC motor control, AC motor starting, and other applications; Controllable silicon is widely used in DC motor control, power switches, AC motor starting, inverters, etc.

Characteristics: Thyristor is a fast switching device with advantages such as fast response speed and suitability for low-frequency circuits; Controllable silicon has a three-layer structure, and the conduction voltage and control voltage have a nonlinear relationship, which has the disadvantages of delayed conduction and difficult control.

Control methods: The triggering methods of thyristors mainly include sine wave control, square wave control, pulse control, etc; The control methods of thyristors are relatively complex, and their triggering methods include various types such as phase control, DC control, pulse control, and pipeline control.

In general, although thyristors and thyristors are both semiconductor devices, they have their own focuses in specific applications, and the choice should be based on specific needs to determine which device to use.