QK006R5

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Thyristors-TRIACs are an important type of switch for use in AC circuits. QK006R5 is a TRIAC that is widely used for mains switching, such as light dimming. It is distinguished from a traditional thyristor due to its capability to control current flow in both directions when a small voltage is applied. Additionally, it contains a special self-latching switch which can allow passage of a single pulse or range of DC or AC voltage to trigger the TRAC.

Applications of the QK006R5

The QK006R5 is frequently used in AC switching applications, most notably in solutions to dim lights. It has the capability to control current in both directions and can handle high levels at various frequencies. The QK006R5 also has a high dropout current, making it suitable for use in many applications such as:

• Temperature control systems
• Industrial motor control
• Light dimming systems
• AC input control for PI protection systems
• Synchronous rectifiers

How QK006R5 works

The basic operation of the QK006R5 involves two parts: the main thyristor, which is connected across the AC line and the gate circuit, which is used to control the thyristor\'s current flow. The thyristor can either be triggered or switched off by the gate. A positive trigger applied to the Gate terminal turns the device OFF, while a negative trigger applied to the Gate terminal turns the device ON.

When the thyristor is OFF, a power surge crosses the main circuit causing a relatively small voltage drop across the thyristor. When the device is triggered, current flows through the main circuit and the thyristor, creating a large voltage drop. This causes the thyristor to switch off and remain off until it is triggered again.

The QK006R5 has the ability to control the flow of current in both directions by using the self-latching switch. This allows for a single pulse or range of DC or AC voltage to trigger the TRIAC when the average polarity of the voltage is negative. When the total pulse width is below the holding current limit of the switch, it will remain off until the next pulse occurs.

The QK006R5 is a robust and reliable switch for a wide range of AC line applications. Its capability to control current in both directions and its robust design make it a suitable choice for many industrial applications. Moreover, its low cost and ease of use make it a popular choice among hobbyists and tinkerers.

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