Title :
Low Temperature Characteristics of MOSFET Targeting Low-Voltage High-Current Power Source for Superconducting Magnets
Author :
Kawanami, Ryo ; Ishigohka, Takeshi
Author_Institution :
Seikei Univ., Tokyo
fDate :
6/1/2006 12:00:00 AM
Abstract :
The authors propose a low-voltage/high-current DC power source using multi-parallel-connected MOSFETs for an excitation power source of superconducting magnets. The power source can operate at 77 K in liquid nitrogen bath. The fundamental idea and some preliminary experimental results are presented. The preliminary experiment using 100 MOSFETs connected in parallel are carried out. The forward-direction voltage drop both at room temperature and 77 K has been measured. The experimental results show good prospect for this type of DC power source in order to excite superconducting magnets
Keywords :
MOSFET; power supplies to apparatus; superconducting coils; superconducting magnets; 293 to 298 K; 77 K; MOSFETs; liquid nitrogen; low-voltage-high-current DC power source; superconducting coil; superconducting magnets; voltage drop; Cryogenics; Current transformers; Diodes; High temperature superconductors; Joining processes; MOSFET circuits; Manufacturing; Power MOSFET; Superconducting magnets; Voltage; Excitation of superconducting coil; MOSFET; low temperature; power source;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2006.870450
