| US 7,515,448 B2 | ||
| AC adapter which can be reduced in size and lowered in profile | ||
| Masahiko Takahashi, Sendai (Japan); and Satoshi Arai, Sendai (Japan) | ||
| Assigned to NEC TOKIN Corp., Sendai-shi (Japan) | ||
| Filed on Sep. 29, 2005, as Appl. No. 11/238,360. | ||
| Claims priority of application No. 2004-289631 (JP), filed on Oct. 01, 2004; and application No. 2005-178112 (JP), filed on Jun. 17, 2005. | ||
| Prior Publication US 2006/0071647 A1, Apr. 06, 2006 | ||
| Int. Cl. H02M 1/00 (2007.01); H05K 7/00 (2006.01) | ||
| U.S. Cl. 363—146 [361/760; 361/761; 361/763] | 18 Claims |
| 1. An AC adapter comprising:
a circuit board having first and second surfaces opposite to each other in a thickness direction of the circuit board;
a transformer portion mounted on the circuit board;
a secondary capacitor mounted on the circuit board and connected to an output side of the transformer portion;
a filter portion mounted on the circuit board, wherein the filter portion and the transformer portion are stacked on each
other; and
a plurality of additional electronic components mounted on the circuit board,
wherein the secondary capacitor has a low profile and extends substantially in parallel to the circuit board, and
wherein the transformer portion and the secondary capacitor are arranged to at least partially overlap each other in the thickness
direction so as to form an at least two-tier structure having substantially a same height as a highest one of the plurality
of additional electronic components.
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