Among various sensing technologies, the most commonly used and widespread method for detecting magnetic fields is the Hall effect method. Based on the Hall effect, many Hall effect sensors or transducers have been found in various applications, primarily used for sensing proximity, speed, current, and position. This is due to the ability to construct Hall … Read more
The potential difference generated by the Hall effect is very small, often only a few microvolts. Therefore, Hall sensors often have a built-in high-gain operational amplifier and may be combined with other system circuits based on overall requirements. The overall architecture is shown below. Typically, the final output signals from Hall sensors can be either … Read more
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Overview of Magnetic Sensors Magnetic sensors have basic characteristics such as non-contact measurement, high reliability, robustness, and high measurement sensitivity. The magnetic field can penetrate many non-metallic materials, triggering the exchange process without direct contact with the target object. By using magnetic conductors (such as iron), the magnetic field can be conducted over longer distances, … Read more
High School Knowledge Search Mini Program Key Point 1: Sensor 1. In modern technology, a sensor refers to a type of component that can sense non-electrical quantities such as force, temperature, light, sound, and chemical components, and convert them into electrical quantities like voltage or current based on certain rules, or convert them into the … Read more
One of the four great inventions of our ancestors in China—the compass—is widely known. For modern sensor technology, it can be regarded as the predecessor of magnetic sensors. In today’s electronic age, magnetic sensors have a wide range of applications in motors, power electronics technology, the automotive industry, industrial automation, robotics, office automation, household appliances, … Read more
1 Basic Knowledge of Common Sensors The definition of a sensor is: “a device or apparatus that can sense the specified measurement and convert it into a usable signal according to certain rules, usually composed of a sensitive element and a conversion element.” A sensor is a detection device that can sense the information being … Read more
Sensors are components or devices that convert collected information into signals that can be processed by equipment. Humans act based on information obtained through vision, hearing, smell, and touch, and devices similarly control or process based on information obtained from sensors. Sensors collect and convert signals (physical quantities) such as temperature, light, color, atmospheric pressure, … Read more
Hello everyone, I am Yi. Let’s continue with the design and selection of current detection circuits. In the previous article, we analyzed the resistance method for measuring current, and found that the limitation of the resistance method is that it introduces power loss, making it unsuitable for measuring large currents. For measuring large currents, Hall … Read more
For more in-depth information and reports in the sensor industry, and to learn about sensor technology, sensor and testing technology, IoT sensor technology, and other sensor knowledge, please follow the Sensor Expert WeChat public account and set it as a star to view past content. The Hall current sensor is based on the magnetic balance … Read more