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Anonymous users2024-02-15Thyristors. It is the abbreviation of thyristor, and it is called thyristor.
It is a high-power switching-type semiconductor device.
In the circuit, it is represented by the letter symbol "V", "VT" (in the old standard, it was represented by the letter "scr").
The thyristor has the characteristics of silicon rectifier device, can work under high voltage and high current conditions, and its working process can be controlled, and is widely used in controllable rectification, AC voltage regulation, contactless electronic switch, inverter and frequency conversion and other electronic circuits.
1. Types of thyristors.
There are several ways to classify thyristors.
1) Classified according to the off-off, on-on and control methods.
Thyristors can be divided into ordinary thyristors, bidirectional thyristors, reverse conducting thyristors, gate shutdown thyristors (GTO), BTG thyristors, temperature-controlled thyristors and light-controlled thyristors according to their turn-off, conduction and control methods.
b) Classification by pin and polarity.
Thyristors can be divided into two-pole thyristors, three-pole thyristors and four-pole thyristors according to their pins and polarity.
3) Classification according to the form of packaging.
According to its packaging form, thyristors can be divided into three types: metal encapsulated thyristors, plastic encapsulated thyristors and ceramic encapsulated thyristors.
Among them, metal-encapsulated thyristors are divided into bolt-shaped, flat-shaped, round-shell and other types; Plastic thyristors are further divided into those with heat sinks.
There are two types: type and type without heat sink.
4) Classification according to current capacity.
According to the current capacity, thyristors can be divided into three types: high-power thyristors, medium-power thyristors and low-power thyristors.
In general, high-power thyristors are mostly packaged in metal shells, while medium- and low-power thyristors are mostly packaged in plastic or ceramic packages.
5) Classification by shutdown speed.
Thyristors can be divided into ordinary thyristors and high-frequency (fast) thyristors according to their turn-off speed.
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Anonymous users2024-02-14A professional electrician explained the classification and application of thyristors and learned!
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Anonymous users2024-02-131. The functions are different: the functions of the transistor are detection, rectification, amplification, switching, voltage stabilization, signal modulation, etc. The function of ordinary thyristors is controllable rectification.
2. The advantages are different: the advantages of thyristors are to control large current (voltage) with small current (voltage), and fight against small size, light weight, low power consumption, high efficiency, and rapid switching. The advantages of transistors are high input resistance, low noise, low power consumption, large dynamic range, easy integration, no secondary breakdown, and wide safe working area.
3. The classification is different: thyristors can be divided into two-pole thyristors, three-pole thyristors and four-pole thyristors according to their pins and polarity. There are two main categories of transistors: bipolar transistors (BJTs) and field-effect transistors (FETs).
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Anonymous users2024-02-121. Types of thyristorsThere are many ways to classify thyristors (thyristors).
1) According to the types of turn-off, conduction and control methods, thyristors are classified as ordinary thyristors, bidirectional thyristors, reverse conducting thyristors, gate shutdown thyristors (GTOs), BTG thyristors, temperature-controlled thyristors and light-controlled thyristors.
2) Classification by pin and polarity: Thyristors can be divided into two-pole thyristors, three-pole thyristors and four-pole thyristors according to their pins and polarity.
3) According to the classification of packaging form, the types of thyristors are divided into three types: metal encapac, plastic encapac, and ceramic encapac. Among them, metal-encapsulated thyristors are divided into bolt-shaped, plate-shaped, round-shell and other types; Molded thyristors are divided into two types: type with heat sink and type without heat sink.
4) According to the classification of current capacity, the types of thyristors can be divided into three types: high-power thyristor, medium-power thyristor and low-power thyristor. In general, high-power thyristors are mostly packaged in metal shells, while medium and low-power SCRs are mostly packaged in plastic or ceramic packages.
5) Classification according to the turn-off speed: The types of thyristors can be divided into ordinary thyristors and high-frequency (fast) thyristors.
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Anonymous users2024-02-11What is the thyristor made of? In particular, what is the material of the piece in the middle?
Hello, the chip in the middle of the flat thyristor type is made of silicon. It is the most important material in the semiconductor industry, accounting for about one-third of the value of the entire wafer fabrication material. At present, more than 90% of integrated circuit chips are manufactured with silicon wafers as substrates.
The entire semiconductor industry is built on silicon materials. Wafer rubber quality is critical to semiconductor manufacturing. The final quality of the chip manufactured on the silicon wafer is directly related to the quality of the silicon wafer used.
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Anonymous users2024-02-10AC and DC voltage regulation, rectification, contactless switch, inverter, etc.
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Anonymous users2024-02-09DC motor speed regulation, AC voltage regulation, etc.
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