The Measurement of Magnet Ring Inductance Value Based on the Switching Circuit
Lei Gao · Electrical Measurement & Instrumentation · 2013
This paper applies the method of measuring the magnet ring inductance by charging or discharging the inductor.By analyzing the relationship among of the bridge measured value and the theory calculation value of the Ni-Zn magnet ring inductance and the inductance value based on the discharge time which is measured by MCU,this paper proves that in the material of the magnet ring and magnet core,inductance L is related with the square of the number of the turns positively,and when the magnet ring magnetic conductivity under the thousand,the inductance value measured by Ni-Zn magnet ring inductance charge or discharge can more exact reflect the value of the Ni-Zn inductance itself with relative measurement bias less than 10%.