Q4X4RP

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Triac Type:	Standard
Voltage - Off State:	400V
Current - On State (It (RMS)) (Max):	800mA
Voltage - Gate Trigger (Vgt) (Max):	1.3V
Current - Non Rep. Surge 50, 60Hz (Itsm):	8.3A, 10A
Current - Gate Trigger (Igt) (Max):	25mA
Current - Hold (Ih) (Max):	25mA
Configuration:	Single
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	DO-214AA, SMB (3 Leads), Compak
Supplier Device Package:	DO-214 (Compak)

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IntroductionA TRIAC, also known as a Thyristor, is a three-terminal semiconductor device used to control electric current in alternating current (AC) circuits. The TRIAC acts as a switch which can control power by switching off current flow in each half cycle. The main application of TRIACs is to control the amount of power that passes through an AC circuit.The Q4X4RP (Q4X4 - Multi-range, 4-Quadrant Rectifier Power Controller) is a thyristor device which allows for accurate power control over a wide range of load conditions. It can be used to regulate current in AC circuits and to regulate power in both single-phase and three-phase circuits.Q4X4RP Application Field and Working PrincipleThe Q4X4RP is used in a variety of applications, including AC motor controllers, LED lighting, power supplies, adjustable-speed drives, solar panel controllers, heating and air conditioning systems, and more. The device can be used to switch between DC and AC power, as well as between AC single-phase and AC three-phase power. It is also able to regulate current and power in both single-phase and three-phase circuits.The working principle of the Q4X4RP is based on its four quadrant operation. In this operation, the device acts as a virtual rectifier that changes the power flow from the power source to the load, allowing for precise control of the current and power in an AC circuit. The device is capable of controlling both power and current in both a unipolar and a bipolar mode.The Q4X4RP is composed of two separate thyristors: a main and a synchronous thyristor (ST). The main thyristor is the one responsible for controlling the power and current in the circuit. The ST is used to synchronize the current and voltage waveforms.In a Q4X4RP operation, the main thyristor uses four different switching patterns, which are determined by the input voltage and current waveforms and the direction of power flow. These four patterns are known as 4-quadrant control: forward conduction, reverse conduction, direct off, and reverse off.During forward conduction, the current flows from the input voltage to the load. During reverse conduction, the current flows from the load to the input voltage. During direct off and reverse off, the current flow is cut off.The Q4X4RP can also be operated in modes such as phase angle control, pulse width modulation, and zero crossing. In these modes, the main thyristor is used to vary the amount of power supplied to the load.ConclusionThe Q4X4RP is a versatile power controller which can be used for both DC and AC power control. It can be operated in 4-quadrant control mode, in which the current and power can be precisely controlled in both single-phase and three-phase circuits. Additionally, the device can also be operated in phase angle control, pulse width modulation, and zero crossing modes. The Q4X4RP is a reliable and efficient device which is well suited for use in a variety of applications.

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