An analog and digital combined approach for multifunctional magnetic measurements

A newly developed microcomputer-based multifunctional magnetic measurement system is presented. Conforming to the related international standards, combining the digital and analog techniques, the system achieved higher performance at lower cost. The initial permeability, amplitude permeability, core loss, and B-H curve of ferrite cores can be measured automatically for a frequency range from 1 kHz to 1 MHz accordingly and with voltage measurement accuracy of 1%. The measuring methods and the system architecture are described. The test results are given