发明名称 |
Power inductor and transformer with low acoustic noise air gap |
摘要 |
A ferrite magnetic core includes a one-piece rectangular outer member with aligned circular apertures in which the ends of a cylindrical center member are retained to thus establish a radial air gap. Radial magnetic forces acting on the core members are summed to zero to theoretically eliminate movement and result in low acoustic noise in high operating frequency power inductors and transformers. A magnetic bridge is added to reduce air gap fringing flux outside the core. Other modifications and a "C" core configuration are described.
|
申请公布号 |
US4047138(A) |
申请公布日期 |
1977.09.06 |
申请号 |
US19760688010 |
申请日期 |
1976.05.19 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
STEIGERWALD, ROBERT L. |
分类号 |
H01F27/255;H01F27/26;H01F27/33;(IPC1-7):H01F27/24 |
主分类号 |
H01F27/255 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|