Improvement of Magnetic Field Measuring Device for Solenoid with Small Diameter Based on Hall Effect
A device was built to measure the magnetic field of the axis of solenoid with long straight and small diameter.The Hall coefficient of the Hall element was measured,and the magnetic field intensity of the rectangular and circular solenoid axes was measured with the improved Hall element.By fitting the ex-perimental data and comparing with the theoretical values,the reliability of the device is better.A alterna-tive scheme is provided for measuring the internal magnetic field of the solenoid with small diameter.