Experiments
1. Measure weak magnetic fields using a magnetoresistive sensor
2. Measure the sensitivity of a magneto-resistance sensor
3. Measure the horizontal and vertical components of the geomagnetic field and its declination
4. Calculate the geomagnetic field intensity
Parts and Specifications
| Description |
Specifications |
| Magnetoresistive sensor |
working voltage: 5 V; sensitivity: 50 V/T |
| Helmholtz coil |
500 turns in each coil; radius: 100 mm |
| DC constant current source |
output range: 0 ~ 199.9 mA; adjustable; LCD display |
| DC voltmeter |
range: 0 ~ 19.99 mV; resolution: 0.01 mV; LCD display |