for triode for alternating current

Thyristor also called SCR stands for silicon controlled rectifier while TRIAC stands for triode for alternating current.

a semiconductor device widely used in power control and switching applications

TRIAC (Triode for AC) is a semiconductor device widely used in power control and switching applications.

a three-terminal device that conducts current in either direction when triggered

A TRIAC is a three-terminal device that conducts current in either direction when triggered.

a type of thyristor

The Triac is a type of thyristor and is simplistically modeled as two back-to-back Silicon Controlled Rectifiers (SCR) on one piece of silicon, with each SCR acting to gate a current flow in each direction, hence the triac is an AC switch.

subset of thyristors

TRIACs are a subset of thyristors and are related to silicon controlled rectifiers (SCRs).

bidirectional thyristor with three terminals device

A TRIAC is thus bidirectional thyristor with three terminals device.

an intelligent hot air tool that can be used for welding or shrinking plastic

The TRIAC AT is an intelligent hot air tool that can be used for welding or shrinking plastic.

a subset of thyristors (analogous to a relay in that a small voltage and current can control a much larger voltage and current) and are related to silicon controlled rectifiers () SCRs

TRIACs are a subset of thyristors (analogous to a relay in that a small voltage and current can control a much larger voltage and current) and are related to silicon controlled rectifiers (SCRs).

a device that is essentially an integrated pair of phase-controlled thyristors connected in inverse-parallel on the same chip.[21] Like an SCR, when a voltage pulse is present on the gate terminal, the device turns on.

The triac is a device that is essentially an integrated pair of phase-controlled thyristors connected in inverse-parallel on the same chip.[21] Like an SCR, when a voltage pulse is present on the gate terminal, the device turns on.

bidirectional devices

Triac are usually bidirectional devices, meaning they operate identically on positive and negative polarity surges.

a semiconductor device having an input to be fed externally

In simple terms TRIAC is like a semiconductor device having an input to be fed externally.

a two-seat three-wheeled car

Triac, by Green Vehicles Inc., is a two-seat three-wheeled car.

that has 4 modes of operation

The triac is a type of switch that has 4 modes of operation, as listed below.

in AC applications for instance for regulating power in a heating element, motor, lamp etc

Triac: Triacs (triode for alternating current) are used in AC applications, for instance for regulating power in a heating element, motor, lamp etc.

that can conduct current in both directions when the polarity activated

TRIAC is a type of Thyristors that can conduct current in both directions when the polarity activated.

a component that is like two thyristors in one case on different directions

TRIAC is a component that is like two thyristors in one case on different directions.

microwave relay system

Triac — The triac is essentially the microwave relay system.

electronic switch that goes in electronic control board

The triac is electronic switch that goes in electronic control board.

a zero-emission vehicle

The TRIAC is a zero-emission vehicle that's now on sale and does the hybrid car

a three terminal semiconductor for controlling current in either direction

The triac is a three terminal semiconductor for controlling current in either direction.