TLP266J(TPL,E

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The TLP266J is an optically isolated triac and SCR output module, relying on phototransistors to create an AC output. It is designed for use in power tools, household appliances, or any system that requires precise control of AC power. The TLP266J is part of a larger group of optoisolators – triac and SCR output modules – and is capable of driving multiple SCRs or triacs.

The TLP266J is composed of three parts: a light emitting diode (LED), a voltage sensing/current limiting resistor, and a phototransistor. The LED and phototransistor are housed in an epoxy package from 0.2 to 0.25inches high. The LED and resistor together act as an AC input voltage detector. When the LED emits light, the phototransistor is activated, creating a high output voltage to trigger the triac or SCR. The TLP266J is designed with a guaranteed isolation voltage of 5kV and an output power (with a load voltage of 250VAC) of 100mW. The LED used in the TLP266J is an IRED (infrared emitting diode) with a wavelength of 780nm. When comparing to other optocouplers, the TLP266J\'s radiation rate is much lower (0.3mW/sr).

The TLP266J is most commonly used for power tools and household appliances due to its ability to precisely control AC power. With its guaranteed isolation voltage of 5kV, low radiation rate, and simple design, the TLP266J is a popular choice for many applications. The TLP266J is also an ideal choice for driving heavy loads, such as those found in motor and relay cables. Finally, the TLP266J offers a wide operating temperature range of -40°C to +85°C, making it suitable for use in both cool and hot conditions.

The TLP266J\'s operating principle is based on the light-activated transistor effect. The LED is connected to the AC input voltage with a voltage sensing/current-limiting resistor. When the AC input voltage reaches a threshold, the LED emits light, activating the phototransistor. The phototransistor is then triggered to generate a high output voltage, naturally controlling the output current. This output voltage is used to trigger the triac or SCR.

The TLP266J is a powerful and useful optoisolator. It provides precise control of AC power and a 5kV isolation voltage, while also being easy to use and cost-effective. With its wide operating temperature range, low radiation rate, and its ability to drive heavy loads, it is an ideal choice for many applications. By combining the TLP266J with other optoisolators, engineers have more control and power over their applications.

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