发明名称 |
Coil device and switching power supply apparatus using the same |
摘要 |
further comprising a fourth printed coil provided on a fourth substrate which has an intermediate hole and a pair of external holes respectively inserted in the intermediate leg and the pair of external legs of the core, the fourth printed coil including a pair of external printed coils which are connected in series and are respectively wound around the pair of the external holes and each having the same number of turns but having wound in the opposite directions, whereby the second printed coil is magnetically coupled with the fourth printed coil to form a second transformer.
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申请公布号 |
US2001020886(A1) |
申请公布日期 |
2001.09.13 |
申请号 |
US20010855256 |
申请日期 |
2001.05.15 |
申请人 |
MURATA MANUFACTURING CO., LTD. |
发明人 |
MATSUMOTO TADAHIKO;NAGAI JUN |
分类号 |
H01F30/00;H01F17/00;H01F19/00;H01F19/04;H01F27/28;H02M3/28;H02M3/335;H05K1/14;H05K1/16;(IPC1-7):H01F5/00 |
主分类号 |
H01F30/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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