FOD852W

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The FOD852W optoisolator, also known as a photocoupler, is a Transistor, Photovoltaic Output type of optoisolator designed by Vishay Intertechnology. It is a 4-pin type device that utilizes a Light Emitting Diode (LED) and a Phototransistor to provide electrical isolation between two different electrical systems. This isolator also has two levels of optical safety, making it particularly useful in industrial and medical applications.

The optoisolator operates on a Photovoltaic Output principle. In this type of optoisolator, an LED or other light source emits light, which is then received by a phot-transistor type receiver. When enough light is received, current will flow from collector to emitter in the receiver, which will then direct a corresponding current through the output of the optoisolator.

FOD852W is used in a wide variety of industrial applications, including process automation, robotics, and motor control. This optoisolator has a wide operating voltage range of 3-26 VDC, making it suitable for use in low-voltage and high-voltage systems. It is also capable of handling input currents ranging from 2µA to 20mA.

FOD852W can also be used in medical applications including MRI scans, X-Ray machines, and patient monitoring devices. The device can be used to provide electrical isolation between circuits that may risk causing damage from voltage and current, including circuits working in hazardous areas like medical and nuclear power plants. The device can also be used in motion control applications and as a level shifter in AC motor control applications.

The FOD852W optoisolator is designed to provide two levels of optical safety. The first level is through the use of a self-contained photodiode, which can detect the presence of both visible and infrared light. This device can detect ambient light and filter out stray signals, preventing false triggering. The second level of safety is through the use of an LED and a phototransistor. In this type of configuration, if the LED fails, the photodiode will short out, preventing the output of the optoisolator from being triggered.

Overall, the FOD852W optoisolator is a reliable and versatile device capable of providing a high level of electrical isolation for use in a variety of industrial and medical applications. It features two levels of optical safety to prevent false triggering and can handle a wide range of input and output voltages. Furthermore, the device is simple to implement and allows for easy integration into existing systems.

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