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

Volume

52

Issue

3

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

804

Lastpage

808

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;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2003.814689

Filename

1213665