Shielding apparatus for a printed circuit board

Details Shielding apparatus for a printed circuit board Shielding apparatus for a printed circuit board

H - Electricity

05

K

347/8

H05K 9/00 (2006.01) H05K 1/00 (2006.01) H05K 1/02 (2006.01)

Patent

CA 1284207

ABSTRACT OF THE INVENTION A shielding apparatus for use on a printed circuit board shields electronic circuitry mounted on the printed circuit board against interfering electric waves. The shielding apparatus com- prises a multi-layer printed circuit board having a circuit trace printed on a middle layer and a ground trace printed on each of the surface layers. Circuity blocks consisting of a plurality of electrical elements are mounted on the top surface of the printed circuit board and are electrically connected to one another by the circuit trace. Metallic cases are provided on the top and bottom surfaces of the printed circuit board for covering the circuitry blocks and are in contact with the ground trace.

532605

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