APV1121SZ

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Optoisolators - Transistor, Photovoltaic Output, are components used to transfer signals between two circuits without direct electrical connection. A typical Optoisolator uses a light-emitting diode to transmit the signal from the input circuit and a photo-detector to detect the signal in the output circuit. One example of this type of Optoisolator is the APV1121SZ.

APV1121SZ Application Field

The APV1121SZ optoisolator is designed for use in electronic relay systems where high-voltage isolation and a low trigger current are required. It is perfect for relay control, LVDS/TMDS data links, and systems where ground loops must be avoided. The APV1121SZ is especially well suited for wide-input voltage ranges, as it is rated from 3 to 24 VDC and from 7 to 42 VAC. Furthermore, it is fully RoHS compliant, making it safe for use in a wide variety of applications.

APV1121SZ Working Principle

The working principle of the APV1121SZ optoisolator is fairly simple. It has a light-emitting diode connected to the input circuit, and a photo-detector connected to the output circuit. The input circuit is usually connected to the power source, and the output circuit is usually connected to the device that needs to be triggered.

When a voltage is applied to the input circuit, it causes the light-emitting diode to emit light. This light is then detected by the photo-detector in the output circuit, which activates a switch. When the switch is activated, it triggers the output device and the device operates according to its program.

The great advantage of the APV1121SZ optoisolator is that it provides electrical isolation between the two circuits, preventing electrical signals from one circuit from affecting the other. This is especially useful in applications where the two circuits are required to be isolated from one another, such as systems with high-voltage and low-voltage components.

Conclusion

The APV1121SZ optoisolator is a reliable and robust component designed for use in a variety of applications where electrical isolation of the two circuits is required. Its wide input voltage range makes it suitable for use in applications with varying voltages, and its RoHS compliance ensures safety for the user. Its working principle is simple, and it provides a secure way to transfer signals between two circuits.

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