The complete list of thyristor family members include diac (bidirectional diode thyristor), triac (bidirectional triode thyristor), SCR (silicon controlled rectifier), Shockley diode, SCS (silicon controlled switch), SBS (silicon bilateral switch), SUS (silicon unilateral switch) also known as complementary SCR or CSCR …

What is reverse conducting thyristor?

The reverse conducting thyristor is a thyristor associated with an anti-parallel diode on a silicon crystal: Insofar as this eliminates a block in the thyristor, losses can be considerably reduced. The two components are prevented from interfering with each other by means of built-in protection rings.

Are also called reverse conducting type thyristor?

The reverse conducting thyristor (RCT) is differentiating itself from the normal high power thyristor by having an integrated reverse diode. Because of the reverse diode this thyristor is not capable of reverse blocking.

What are various types of thyristors?

Types of Thyristors

  • Silicon controlled thyristor or SCRs.
  • Gate turn off thyristors or GTOs.
  • Emitter turn off thyristors or ETOs.
  • Reverse conducting thyristors or RCTs.
  • Bidirectional Triode Thyristors or TRIACs.
  • MOS turn off thyristors or MTOs.
  • Bidirectional phase controlled thyristors or BCTs.
  • Fast switching thyristors or SCRs.

What do thyristors do?

Thyristors are mainly used where high currents and voltages are involved, and are often used to control alternating currents, where the change of polarity of the current causes the device to switch off automatically, referred to as “zero cross” operation.

What is the importance of thyristor family?

The primary function of a thyristor is to control electric power and current by acting as a switch. For such a small and lightweight component, it offers adequate protection to circuits with large voltages and currents (up to 6000 V, 4500 A).

What are the applications of thyristors?

Applications of Thyristor

  • Mainly used in variable speed motor drives.
  • Used in controlling high power electrical application.
  • Used mainly in AC motors, lights, welding machines etc.
  • Used in fault current limiter and circuit breaker.
  • Fast switching speed and low conduction is possible in ETO thyristor.

What is the reverse blocking voltage for reverse conducting thyristor?

The diode clamps the reverse blocking voltage of the SCR to 1 or 2 V under steady state conditions. However, under transient conditions, the reverse voltage may rise to 30V due to induced voltage in the circuit stray inductance within the device.

What are the 4 types of thyristors?

Basic types of thyristors are: SCR, SCS, Triac, Four-layer diode and Diac.