EL1116(TB)

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Optoisolators are electrical components that have an open-circuit isolation voltage between its input and output terminals. In general, optoisolators are designed to prevent electrical signals on the input side from influencing the signal on the output side, isolating the two sides. In addition, optoisolators can also be used as an electrical current regulator.

EL1116 (TB) is one type of optoisolator that uses a transistor photovoltaic output. It consists of a detection IC, a NPN transistor and a functional LED, and provides 2.5 kVrms isolation voltage. It is suitable for applications such as industrial PLCs and automatic controllers.

The working principle of EL1116 (TB) is based on a four-layer integrated optical-coupled triple isolation structure. The photovoltaic output part uses a bundled configuration of a functional LED and a NPN transistor. Photovoltaic couples in the system can convert light energy into electrical energy. The system requires a LED to emit light, which enters the detector and then triggers the transistor on the output side, thus completing the electrical isolation. When the input terminal is energized and the output is not energized, the transistor begins to work and the LED is irradiated by the drive current of the input terminal to emit light. In this case, the transistor on the output side is then driven to be turned on, thus controlling the electric load in the output circuit according to the input signal.

In addition, EL1116 (TB) is also designed with a few more features. The input side of the optoisolator is equipped with a detection IC, which accurately reflects the input voltage as an output voltage to provide external feedback control. It also has zero-cross control and surge suppression design, which provides two sets of protective functions for the output side. It is also designed with dual insulation design and is certified with an isolating voltage of 2.5 kVrms, making it suitable for applications with high requirements for insulation voltage. The low input current of 5mA makes it an ideal choice for mobile applications such as laptops.

In conclusion, EL1116 (TB) optoisolator is a transistor photovoltaic output type optoisolator and is suitable for industrial PLCs, automatic controllers and other applications that need isolation voltage with high requirements. It is designed for a current of 5mA input and provides 2.5 kVrms insulation voltage. It can also provide dual insulation protection functions and external feedback control. It is an ideal choice for mobile applications with power requirements.

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