AD221-02E

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AD221-02E Application Field and Working Principle

As one type of magnetic sensors – switches (solid state), the AD221-02E is capable of providing reliable and fast sensing of a strong magnet, making it an ideal choice for use in a variety of industrial and commercial applications. It is especially suitable for applications involving the detection of existing magnetic fields as well as for applications seeking to create clean zero-crossing outputs for a microcontroller or other logic device.The unit uses a Hall Effect integrated circuit to accurately detect the presence of magnetic fields. Its power consumption is so low that, depending on the application, it can typically be powered by an on-board power source or from a remote source. The device can be purchased pre-programmed with the necessary settings, asking for customization only via the choice of switch configurations and the optional Adjustable Zero Set Feature. Additionally, this strong, mechanically stable device can be used in temperatures ranging from -25°C to +85°C, and the hysteresis on the zero set field can be adjusted to a maximum of +/- 1.5°.

Field of Use

The AD221-02E is widely used in industrial operations such as material handling systems, inspective devices and sensor-based automation processes that require a reliable input device. It can also be used in commercial situations where small physical contact switches are needed for magnetic rotation or position detection, or for creating switch outputs with zero transition points. In particular, it is ideal for synchronizing the operations of two or more devices as it can detect existing magnetic field measurements for accurate performance.

Working Principle

The AD221-02E features a Hall Effect integrated circuit that is used to detect the presence of a magnetic field. The circuit board includes Hall plates that are sensitive to a wide range of magnetic strengths. When a magnetic field is present, the Hall plates generate a current and voltage, sending a signal through the Hall element which varies in proportion to the strength of the field. This signal is then amplified and further processed to achieve an output switch response. In order to optimize the response, the AD221-02E has adjustable programmable zero set feature that allows for higher accuracy in detecting field strength changes.

Conclusion

The AD221-02E magnetic switches (solid state) is a reliable and straightforward device capable of providing an accurate and quick response to the presence of a strong magnetic field. Being both mechanically stable and power efficient, it is an ideal choice for a variety of industrial and commercial applications involving magnetic rotation or position detection. With the adjustable zero set feature, the device is capable of producing clean zero crossing outputs for microcontroller or logic device applications.

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