| 摘要 |
<p>An electrical circuit has a substrate 1 and a surface mount capacitor 3 having a connector pad 31, 32 at each end. The substrate 1 has two separate contact pads 10 and 11 that are both soldered to the same pad 31 on the capacitor 3. Two further pads 20 and 21 on the substrate 1 are soldered to the other pad 32 on the capacitor 3. The pads 10, 11, 20 and 21 on the substrate 1 are connected to tracks 13, 14, 23, 24 that extend to plated-through holes 15, 16, 25, 26 and are electrically connected to one another at a point remote from the capacitor 3. The presence of the two separate inductances carried by the pads 10 and 11 results in improved attenuation by the capacitor at higher frequencies, and the capacitor is therefore more effective at reducing interference. <IMAGE></p> |
