EL816(S)(TU)-V

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Optoisolators are components that allow for the transmission of information between two electrically isolated systems. This isolation is achieved by using light beams, which utilize photocells to convert light into electrical signals. The EL816(S)(TU)-V optoisolator is an example of a transistor, photovoltaic output optoisolator, meaning that instead of using light emitting diodes as outputs, it utilizes light-sensing transistors.

The EL816(S)(TU)-V is a type of optoisolator known as a Darlington output, meaning it utilizes a Darlington pair emitter-follower configuration. This configuration is beneficial for many applications due to the fact that it has a high current gain and a high-input impedance. Additionally, it has a voltage drop across it of only about 0.6 to 0.8V, meaning that is consumes very little power. This is a major benefit for applications such as logic level conversion, debugging, or any other situation where power is limited. Furthermore, it offers an inherent protection against electrical surges.

The EL816(S)(TU)-V has many practical application fields. One of the most common use cases for this type of optoisolator is for interfacing the analog world (such as modems, video display monitors, keyboards, or joystick) with a digital controller. These devices can be used to protect digital controllers and provide channels between them and the analog world without the need for complex or expensive cables or circuits. Since the optoisolator is complete immune to electrical noise, it can be used for applications such as protecting computerized systems from external wiring or avoiding coupling capacitors.

The working principle of the EL816(S)(TU)-V is relatively simple. It is designed for digital signals in the range from DC to around 100kHz. It consists of an LED (light emitting diode), a Darlington pair emitter follower, and a phototransistor, all embedded in a single integrated package. The LED side is supplied with an input signal, coming from some external source, which will cause the LED to illuminate. This in turn activates the phototransistor, which then is used to produce an output signal in the same way an ordinary transistor might.

In summary, EL816(S)(TU)-V is an example of a transistor, photovoltaic output optoisolator. It is designed to allow the transmission of information between two electrically isolated systems. It can be used for many practical applications, such as interfacing the analog world with a digital controller, protecting computerized systems from external wiring, or providing channels between a digital controller and analog devices. The working principle of the optoisolator is based on the electronic components of an LED, a Darlington pair emitter, and a phototransistor.

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