发明名称 |
Sintered transformer core of MnZn-ferrite and a transformer comprising such a core. |
摘要 |
<p>The invention relates to a sintered transformer core of MnZn-ferrite material, the initial permeability of which ranges between 10 and 1000. Said transformer cores preferably have an average particle size which ranges between 0.05 and 2.0 mu m. The transformer cores according to the invention exhibit surprisingly low overall losses when operating in the frequency range of 2 MHz and higher. Such transformer cores can be very advantageously used in transformers operated in said frequency range, such as SMPS transformers. <IMAGE></p> |
申请公布号 |
EP0460760(A1) |
申请公布日期 |
1991.12.11 |
申请号 |
EP19910201368 |
申请日期 |
1991.06.04 |
申请人 |
N.V. PHILIPS' GLOEILAMPENFABRIEKEN |
发明人 |
JOHNSON, MARK THOMAS;NOORDERMEER, AART;SEVERIN, MARIJKE MARIA EDUARD;VISSER, EELCO GERBEN |
分类号 |
C04B35/26;H01F1/34;H01F3/08;H01F27/255 |
主分类号 |
C04B35/26 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|