AD722-02E

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Magnetic sensors and switches are commonly used in robotics, automotive, industrial, and consumer applications. This article explores the application field and working principle of the AD722-02E magnetic sensor switch.

Overview of Magnetic Sensors and Switches

Magnetic sensors and switches are devices that use magnetic fields to detect the presence of a target object. They are often used for proximity sensing and triggering relays and other switches. Common applications include door and window sensors in home automation systems, and security systems. They are also used in robotics, automotive, industrial, and consumer applications.

Magnetic sensors and switches can be classified into two categories: mechanical and solid state. Mechanical magnetic sensors and switches are typically electromechanical devices that use physical contact for their operation. Solid state models use semiconductor materials like gallium arsenide (GaAs) to detect changes in the applied magnetic field.

AD722-02E Magnetic Sensor Switch

The AD722-02E is a solid state magnetic sensor switch manufactured by Qualcomm. It is designed to detect the presence of a certain amount of magnetic radiation and can be used for proximity, motion, and other applications.

Application Field

The AD722-02E is a popular choice for proximity sensing application such as door and window sensors in home automation systems and security systems. It is also used in various robotics applications such as object detection and obstacle avoidance. Other applications include motor speed and position control, automated door locks, and automotive and industrial applications like door open/close detection and machine calibration.

Working Principle

The AD722-02E operates using a Hall Effect sensor which detects changes in the strength of a given magnetic field and produces an output voltage that is proportional to the strength of the field. When an external magnetic field is detected, a trigger voltage is generated and sent to a connected digital logic circuit. The logic circuit can then be used to trigger various events such as the turning on of a relay or the firing of a solenoid.

Conclusion

The AD722-02E magnetic sensor switch is a popular choice for proximity sensing applications and robotics. It uses a Hall Effect sensor to detect changes in a given magnetic field and can be used to trigger various events. It is versatile and can be used in both industrial and consumer applications.

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