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.
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
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