ELECTRONIC DEVICE AND ELECTROMAGNETIC NOISE CONTROL METHOD

摘要

An electronic device comprises a plurality of printed circuit boards having signal GNDs, a metal bar which electrically connects to the respective signal GNDs of the plurality of printed circuit boards, and a card basket which houses the plurality of printed circuit boards and the metal bar and serves as a frame GND. The electronic device also comprises a dielectric between the card basket and the metal bar. The metal bar, the card basket, and the dielectric constitute a noise control capacitor having specific frequency characteristics. By the specific frequency characteristics, the noise control capacitor releases electromagnetic noise occurring in the respective signal GNDs to an outside and shields external noise generated outside.

主权项

1. An electronic device comprising:
a plurality of circuit boards having signal grounds; a conductive plate electrically connected to the signal grounds of the plurality of circuit boards; a board housing frame that houses the plurality of circuit boards and the conductive plate and has a frame surface serving as a frame ground; and a dielectric provided between the frame surface of the board housing frame and the conductive plate.