BT1308W-600D,135

Thyristors - TRIACs

BT1308W-600D is a type of TRIAC, a three-terminal semiconductor device for controlling current characterized by a bi-directional build-up of current. They are triggered into conduction when a current is driven into their Gate terminal at which point both Anodes become conductive.

Applications

Applications for BT1308W-600D include motor speed control, temperature control, lamp dimming, appliance control and audio switching. The two most immediate applications are lamp dimming and motor speed control.

• Lamp dimming: BT1308W-600D is used to dim incandescent bulbs. By adjusting the duty cycle of the current supplied to the bulb, it is possible to reduce the brightness of the bulb. This is achieved by controlling the output current of the TRIAC, which in turn controls the brightness of the light.
• Motor speed control: The speed of a motor can be controlled by controlling the output current of the TRIAC. By controlling the duty cycle of the output current, it is possible to control the rotational speed of the motor, allowing for accurate control of motor speed.

Working Principle

The BT1308W-600D TRIAC works by controlling the output current of the device, using the bi-directional build-up of current. When the TRIAC is turned on, the anode and gate terminals both become conductive, allowing current to flow through the device. This current causes the gate voltage to build up, increasing the gate current until the device turns off when the gate current reaches its threshold. This process is repeated every time the TRIAC is triggered into conduction, allowing for precise control of the output current of the device.

The BT1308W-600D TRIAC can also be triggered into conduction by driving a current into its gate terminal. This enables the device to be operated either in a continuous mode or in a burst mode, allowing for further control of the output current.

Conclusion

The BT1308W-600D TRIAC is a versatile and powerful three-terminal device that can be used to control the current in a variety of applications. Its ability to control the output current using the bi-directional build-up of current makes it ideal for applications such as motor speed control, lamp dimming, appliance control and audio switching.