| 摘要 |
An electrical circuit card adapted to be removably received in a grounded, electrically conductive housing comprises an insulative circuit board, an insulative faceplate coupled to the circuit board along the front edge thereof, and an electrically conductive shielding strip behind the faceplate for reducing EMI emission. The shielding strip comprises an intermediate portion extending generally vertically along the rear surface of the faceplate, resilient upper and lower spring arms extending rearwardly at an angle from the intermediate portion, and upper and lower contact pads at the ends of the respective upper and lower spring arms. The upper and lower contact pads form planar contact areas which are disposed at an angle relative to the spring arms, and which are parallel to corresponding electrical contact surfaces provided on the housing. The planar contact areas of the shielding strip form reliable electrical connections with the housing upon insertion of the circuit card, and also provide capacitive coupling between the shielding strip and the housing in the event that direct contact is not established.
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