| 摘要 |
<p>PURPOSE: To ground an electronic circuit in view of high frequency by electrically bridging a spacing between a cover layer of a printed wiring board and grounded portion with a plastic or elastic material filled with a conductive metal. CONSTITUTION: In a casing 1, a printed wiring board 2 is mounted and conductor lines 4, 5 are laid on the top surface of the wiring board 2. Blocking capacitor 6 is fixed to the conductor lines 4, 5, and the wiring board 2 is bonded to the inner wall 11 of the casing 1 by adhesives 10. In the extent of a surface 8, the adhesive is filled with a conductive metal 12 and forms one side of a capacitor with the metallized surface 8 short-circuited with the adhesive, while the other side of the capacitor is an Al casing 1 with an immobile layer 13 on the inner wall 11, serving as a dielectric. Capacitors 8, 12, 13, 1 connected in series, in addition to the capacitor 6, short-circuit a circuit of the electronic controller to the casing grounded in view of high frequency.</p> |
