LTV-815

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Optoisolators - Transistor, Photovoltaic Output are devices that send and receive data signals between isolated systems. These devices use a combination of optical and electrical components to enable safe and reliable communication between the systems. The LTV-815 is a PNP phototransistor output optocoupler developed by Lite-On Technology Corporation. It is a subminiature, dual channel, photocoupler package with a wide variety of applications.

Applications

The LTV-815 is a highly versatile optoisolator with a wide range of applications. Some of the common uses for this device include applications for measuring current direction, power device drive, motor control, sound level detection, grounding circuits, protective circuit design, current monitoring, serial communication, and interface adapter circuits.

Advantages

The LTV-815 optoisolator has some key benefits that make it a preferred choice for many applications. Firstly, the optoisolator is constructed with a tiny dual-in-line package that offers superior insulating strength between its input and output circuits. Secondly, the device offers high distortion reduction and isolation between the signals being transmitted. Thirdly, its PNP output circuit is capable of controlling loads up to 500mA, providing flexibility in its applications. Lastly, the optoisolator is designed to withstand 5,000V AC for one minute, proving its excellent durability.

Working Principle

The LTV-815 uses the exciting light output of a light emitting diode (LED) to trigger a phototransistor. The LED emits an infrared beam which passes through a base plate protective window and is focused onto the base of the phototransistor. The light beam\'s energy is then converted into a small electrical current via a photo-sensitive resistance or photovoltaic effect. This current activates the transistor to open or close its contacts, thereby allowing or denying the flow of a specific voltage or electrical current.

Security Features

The optoisolator is designed to withstand high electrical surges of up to 10kV, providing an additional layer of safety. Additionally, the internal photocoupler adds a further level of protection since it effectively isolates the electrical signals, making it impossible for false data signals or noise to be present in the transmission. This provides control and stability for circuits that may be subject to high vibration or electromagnetic interference (EMI).

Conclusion

The LTV-815 is a highly reliable and durable phototransistor output optoisolator designed to handle a wide variety of applications. It reduces distortion and provides excellent isolation between the send and receive circuits, making it easier to control and monitor current and voltage. Its tiny form factor offers superior insulation strength and the additional security features make it an ideal choice for protecting sensitive circuits.

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