FOD4116V

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Optoisolators are components designed to electrically isolate two circuits such that currents flowing in one circuit do not affect the operation of the other. In the case of triac and silicon controlled rectifier (SCR) outputs, the optoisolators provide electrical insulation between AC and DC control signals and low-voltage AC or DC loads. In this article, we will discuss the application field and working principle of FOD4116V optoisolator.

The FOD4116V optoisolator is commonly used to separate low-level (0.5V to 24V) control signals from AC or DC loads. It is suitable for use in household appliances, safety systems, and process control equipment. It features low power consumption (170mW), a high insulation voltage rating (2000V RMS), and a long creepage distance (6.35mm). The device is encapsulated in a low-profile outline, making it ideal for use in rectangular cutouts.

The FOD4116V optoisolator has two input channels, one for AC control and one for DC control. Its output is a triac or SCR with an electric current rating of up to 250mA. It also includes a built-in zero current switching (ZCS) circuit which enhances the operation of the trigger by providing a constant voltage level when the load current crosses the zero-current point. This eliminates unnecessary noise and reduces the loading on the system.

The working principle of the FOD4116V optoisolator is simple. When a control signal is inputted into the device, an LED inside the isolation chip emits light. This light is detected by a photodetector embedded in the chip, which activates the corresponding output (SCR or triac) which then turns on or off the load. The ZCS circuit monitors the current and ensures that the load is switched off as soon as the current drops below the zero-point.

In conclusion, the FOD4116V optoisolator is a simple and reliable optical device used to electrically isolate two circuits. It is suitable for use in a wide range of applications, including household appliances, safety systems, and process control equipment. Its features include low power consumption, high insulation voltage, long creepage distance, and a zero-current switching circuit. With its simple working principle, it is an ideal choice for providing safe and reliable control of low-voltage loads.

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