Title :
Test Method Research of Magnetic Saturation Current of High-Frequency Transformer
Author :
Ma, Hongtao ; Wang, Xiaojun ; Zhou, FenPing
Author_Institution :
Coll. of Inf. Sci. & Eng., Hebei Univ. of Sci. & Technol., Shijiazhuang, China
Abstract :
When the case of magnetic saturation of high-frequency transformer occurs in switching power supply, the effect to efficiency and output power as well as the harm to power switch tube are analyzed. A method of low-voltage, low-frequency square wave signal driving the primary coil of high-frequency transformer is introduced. By observing the current waveform of coil with oscilloscope and some following simple calculation, high-frequency magnetic transformer saturation current value can be obtained. The principle, related circuit, specific method, an example and result analysis of measuring are presented.
Keywords :
coils; high-frequency transformers; switched mode power supplies; transformer testing; high-frequency transformer test method; magnetic saturation current; oscilloscope; power switch tube; primary coil; square wave signal; switching power supply; Circuit faults; Inductance; Inductors; Magnetic analysis; Magnetic cores; Magnetic switching; Permeability; Power supplies; Saturation magnetization; Testing; high-frequency transformer; magnetic staturation; test method;
Conference_Titel :
Measuring Technology and Mechatronics Automation, 2009. ICMTMA '09. International Conference on
Conference_Location :
Zhangjiajie, Hunan
Print_ISBN :
978-0-7695-3583-8
DOI :
10.1109/ICMTMA.2009.145
