The emergence of semiconductor thyristor
module into the 20th century one of the most significant breakthrough in modern physics, marks the birth of electronic technology.
Due to different areas of the practical need, prompting semiconductor thyristor device since then rapid development to the two branches, one of the branch that is a delegate with integrated circuit of microelectronic devices, the characteristics of small power, integration, as an information detection, transmission and processing of tools;
And the other is power electronics, characteristic for high power, the rapidness.
In 1955, the United States ge company developed the world's first to heavily sb-doped silicon rectifier for the semiconductor material silicon rectifier (
In 1957, and the development of the world's first used for power conversion and control of silicon controlled rectifier (
Because they have small volume, light weight, high efficiency, long life advantages, especially the larger SCR to small current control power, the power electronic semiconductor devices successfully from the weak current control field to enter the field of high voltage control and power control.
On the application of the rectifier, quickly replaced the mercury rectifier thyristor module (
, the realization of the solid, the rest of the rectifier and non-contact, and get a huge energy saving effect.
Starting in the 1960 s, from ordinary thyristor successively developed fast thyristor, optically controlled thyristor, thyristor and asymmetric bidirectional thyristor and other characteristics of the thyristor, forming a huge thyristor module family.
But the thyristor module itself there are two important factors restricting the development of its continued.
One is the lack of control the function, the ordinary thyristor belongs to a half type control device, through the gate (
Can only control the opening and can't control its shut off, after conducting control is no longer work, cut off the power supply must be shut off, even through the forward current is less than to maintain current thyristor.
Shut off as a result of the thyristor controlled features, must be matched with other consist of inductance and capacitance and auxiliary switch devices such as the forced commutation circuit, so that the device volume increases, the cost increases, and the system is more complex, lower reliability.
Because such devices based on the discrete component structure, open the loss is big, work hard to improve frequency, limits its application scope.
In the late 1970 s, as can turn off thyristor (
Mature, successfully overcome the defects of ordinary thyristor, marked the power electronic devices from half controlled devices to all control devices.
Zhejiang rectifier co. , LTD. , the production of various kinds of specifications models of thyristor module, thyristor module, solid state relay module, rectifier bridge module, such as supporting the radiator products, sincerely look forward to the cooperation with various companies and procurement staff, to provide affordable, quality and reliable electronic components.
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