Description:

Generally speaking, the magnetic metal and alloy are possessed of the magneto resistance phenomenon. The magneto resistance is a phenomenon that the resistance changes in a certain magnetic field. The huge magneto resistance is a phenomenon that the resistance reduces suddenly in a certain magnetic field. The reductive amplitude is more than magneto resistance value of magnetic metal and alloy material 10 times above. The huge magneto resistance effect is applied extensively to the high-density magnetic reading heads and magnetic store elements. It is often used to measure the displacement and angle also. Compared with the photoelectric sensor, the huge magneto resistance sensor is possessed of the following features such as higher sensitivity, lower power consumption, excellent reliability and compact in volume as well as service under the atrocious conditions.

This apparatus is used as the new-type huge magneto resistance sensor so that the students can know the principle and application of the huge magneto resistance effect. It is used for the fundamental physical, modern physical and comprehensive designed experiments in common universities and colleges and technical secondary schools due to the simple operation, rich, safe and reliable experimentation.

The following experiments can be carried out when this apparatus is used:

1. Know the huge magneto resistance effect principle and study the calibration method of huge magneto resistance sensor. Use the huge

Magneto resistance sensor to measure the weak magnetic field;

2. Determine the relationship between included angle of sensitive axis on huge magneto resistance sensor to measured magnetic field and sensitivity of

sensor;

3. Determine the relationship between sensitivity of huge magneto resistance sensor and operating voltage;

4. Use the huge magneto resistance sensor to measure the current of electrified wire.

Details: