Title :
High-temperature, high-frequency characterization system for power ferrites
Author :
Nakmahachalasint, Paiboon ; Ngo, Khai D T
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Florida, Gainesville, FL, USA
fDate :
6/1/2003 12:00:00 AM
Abstract :
An automatic magnetic test system is presented that can measure hysteresis loops of Manganese-Zinc (MnZn) power ferrites up to their Curie temperatures, in the 10 kHz-1 MHz frequency range. Low-cost test fixtures are constructed that can withstand elevated temperatures as high as 250 °C. The experimental procedures for the automated acquisition of dynamic hysteresis loops with constant and with variable peak flux density are presented. The usefulness of the test system is demonstrated by the experimental results from three commercial MnZn power ferrites.
Keywords :
automatic test equipment; calibration; ferrites; high-temperature techniques; magnetic cores; magnetic hysteresis; magnetic variables measurement; manganese alloys; measurement errors; zinc alloys; 10 kHz to 1 MHz; 250 degC; ATE; HF characterization; MnZn; MnZn ferrites; automated acquisition; automatic magnetic test system; dynamic hysteresis loops; high-frequency characterization; high-temperature characterization; low-cost test fixtures; magnetic cores; power ferrites; Ferrites; Frequency measurement; Instruments; Magnetic cores; Magnetic flux; Magnetic hysteresis; Power amplifiers; Temperature distribution; Temperature measurement; Testing;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2003.814689
