Disc thyristor

Semikron Silicon Controlled Rectifier (SCR) or thyristor is a unidirectional semiconductor device made of silicon. This device is the solid state equivalent of thyratron and hence it is also referred to as thyristor or thyroid transistor. Basically, SCR is a three-terminal, four-layer semiconductor device consisting of alternate layers of p-type and n-type material.

When the anode current becomes zero, the SCR stops conducting and blocks the r

The disc thyristor or fast switching thyristor is the main component of the induction furnace power supply and thyristor frequency converter. The thyristor frequency converter consists of a rectifier bridge and an inverter bridge. The disc thyristor is usually used as an inverter circuit and a phase control thyristor acts as a rectifier circuit. In the disc thyristor or fast thyristor, there are two or four SCRs in series with the inverter circuit.

Disc Thyristor Structure:

Disc Thyristor or Plate Thyristor is a type of thyristor designed in the shape of a disc or plate. Due to their special design, these types of thyristors are suitable for specific applications and specific operating conditions. Here we will review the features, applications and advantages of disc thyristors:

Disc Thyristor Features:

• Physical Design: The disc thyristor is designed in the shape of a disc or plate, which is usually attached to a metal base or thermal insulator. This design allows them to handle high thermal power and operate in harsh operating conditions and high temperatures.
• Cooling: The disc design usually helps improve the cooling process. The larger surface area of ​​the disc thyristor helps in better heat distribution, which is critical for optimal performance at high temperatures.
• High power: Disc thyristors are usually designed to handle high currents and high voltages, and are therefore suitable for industrial applications that require high power control.
• Environmental resistance: These types of thyristors are usually designed to withstand harsh environmental conditions, such as humidity and dust.

Disc thyristor applications:

Industrial power control: Disc thyristors are used in applications that require high power control and resistance to heavy loads, such as motor control and industrial heating systems.

Rectifiers: In rectifier systems that require high currents, disc thyristors are used due to their ability to handle large loads.

Circuit protection: In protection circuits to prevent overcurrents and sudden voltages, disc thyristors are used due to their high strength and reliability.

Power and power systems: In industrial power supplies and power distribution systems, disc thyristors are used due to their ability to handle large loads and harsh operating conditions.

everse voltage. SCRs are used in switching circuits, DC motor drives, AC.

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