Q6015L5

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Q6015L5 Application Field and Working Principle

Thyristors are often classified as TRIACs due to the similarities in their electrical characteristics, structure, and basic application field. The Q6015L5 is a TRIAC which is a bidirectional, three-terminal semiconductor switch which consists of two thyristors connected in antiparallel. This device utilizes a gate current to trigger both operational switching of the two internal thyristors. As a result, the TRIAC is used in applications where it acts as an electronically controlled switch.

Features of the Q6015L5

The fundamental features of the Q6015L5 include its 120 V holding current, 1700 V diffusable content, and 800 mA maximum overload current. This device is designed to control small AC voltage instead of direct electrical current. It is also equipped with an electret microphone which provides the sound noise in case of an overload.

Application Field

The Q6015L5 is primarily used for medium- to low-voltage AC motor control. It can also be utilized in lighting control and switching circuits in medium voltage applications. The device is particularly popular for home appliances, such as dimmer controls and UPS systems. Furthermore, it is also used in low voltage AC-DC power supplies, motion control applications, and power factor correctors.

Working Principle

The Q6015L5 has three main terminals, namely an Anode, a Cathode and a Gate. The Gate terminal is used to control the switch operation when it receives a potential relative to the Anode or the Cathode line. When a potential is applied to the gate, a flow of electrons is initiated from the Anode to the Cathode. This flow of electrons is called the ‘gate current’ and it is a few hundred mA in size. It is important to note that the gate current must be sufficient to enable the device to turn on.

The Q6015L5 is a bidirectional device which means that it can conduct current in either direction depending on the polarity of the voltage applied to it. The device can be used in series with a load, so that only one side of the gate is connected to the controlling line. As a result, in order to turn on the device both sides of the gate current must be triggered. The device will then remain in an on state until it is turned off. This is usually done by removing the gate current.

Conclusion

The Q6015L5 is a popular device because of its wide range of applications. It is particularly popular for home appliance and motor control applications due to its 120V holding current, 800mA maximum overload current, and 1700V diffusable content. Moreover, its gate current triggered operation makes it an ideal solution for medium- to low-voltage AC control applications. This device is an example of a Thyristor classified as a TRIAC and can be used to control current in either direction depending on the polarity of the applied voltage.

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