Q6008L556

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The Triac is an electronic component classification which stands for ‘Triode for Alternating Current’. It is a type of thyristor which is capable of controlling and regulating the flow of alternating current (AC) with a three terminal device. The Triac, similar to other thyristors devices, has three terminals, Gate, MT1 and MT2, and can be triggered into conduction with a single pulse applied to the Gate terminal.

The model Q6008L556 is a four quadrant thyristor controlled triac module with glass passivated junctions. This triac module is one of the advanced generations of four quadrant thyristors developed with increased current capability – able to switch 15 to 25A of RMS (Root Mean Square) current and half the on-state voltage drop. This triac module also features a rugged construction, good thermal conduction and a high surge current capability – making it very suitable for a wide range of industrial, commercial and domestic applications.

The general applications of the Q6008L556 triac module include light dimmer, alternating motor speed controllers, thyristor soft starters, automated gate control, industrial electric oven controls, light switching systems, motor control, etc. It is designed for single-phase motor control, welding machine control and HVAC systems. It is also used for DC motor reversing, AC motor reversing, AC motor speed control, AC voltage inversion and DC brushless motor reversing.

The main principle of operation of this thyristor module is that when a voltage signal is applied to the gate terminal, the device starts conducting current between MT1 and MT2 terminals as if it was a closed switch. The two ends of the terminals are initially blocked until a positive gate signal is applied, at which point the thyristor starts conducting. The Q6008L556 thyristor is capable of providing a reasonable current capacity with low power losses, making it suitable for a variety of applications.

Once the device has been triggered and the current and voltage have dropped, the gate signal current will have to be re-applied to maintain the circuit in conduction. If the current has exceeded the device’s rating, the device will automatically shut off and begin the cycle again. This process is referred to as the ‘Quench Mode’. This allows the Q6008L556 module to provide protection from over-current conditions and is a safety feature that is built into all industrial thyristors modules.

Overall, the Q6008L556 Triac module is an advanced, thyristor controlled component which is suitable for a wide range of applications. This device offers low power losses, high surge current capability, and reliable protection from over-current conditions, making it an ideal component for industrial, commercial and domestic applications.

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