| 摘要 |
<p>A small, lightweight, efficient, very low cost AC adaptor for consumer electronics applications is realized by combining a switching regulator (22) integrated circuit (14) along with a leadframe (24) adapted to mount the switching regulator (22) integrated circuit (14) off-center, a single-sided printed circuit board (18) and high frequency ferrite cores (12, 16). These components are assembled onto a substrate, such as a printed circuit board (18), by means of well-known, low-cost automatic insertion assembly machines. The novel structural aspects result in formation of a transformer from the leadframe (24) and traces on the printed circuit board (18). The power supply resulting from this assembly method may be small enough to be molded into the plug portion of a standard AC power cord. <IMAGE></p> |
