Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1982-04-08
1984-09-25
Goldberg, Howard N.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
36443103, 381 86, 381 94, 455297, B62D 4300, H05K 334
Patent
active
044737556
ABSTRACT:
A device for preventing noise leakage externally from a digital electronic apparatus using a clock pulse generator, comprising: (a) a metal casing; (b) a printed circuit board housed within the metal casing into which the digital electronic apparatus is assembled having a plurality of land patterns formed thereon at the end of various signal lines of the digital electronic apparatus; (c) a connector attached at one end of the printed circuit board having a plurality of connector pins therewithin for connecting said land patterns with external various apparatus; (d) an insulative film positioned on one surface of the printed circuit board closely adjacent to the land patterns; (e) a conductive film coated on one surface of the insulative member and coupled electrically to the metal casing; and (f) a plurality of chip-type capacitors which bridges between the conductive film and plurality of land patterns for effecting noise filtering and a method of manufacturing the device described above comprising the steps of: (a) coating a solder-resisting film on the conductive film except a portion to which the chip-type capacitors are connected and a portion to which the metal casing is electrically connected; (b) electrically connecting the conductive film to the plurality of chip-type capacitors to the land patterns in a soldering with a solder bath; and (c) electrically connecting the conductive film to the metal casing.
REFERENCES:
patent: 3818349 (1974-06-01), Ma
patent: 4126840 (1978-11-01), Selvin
patent: 4325103 (1982-04-01), Ito et al.
patent: 4370700 (1983-01-01), Duddles et al.
Endo Hiroshi
Imai Iwao
Kasuya Hideo
Sone Masazumi
Arbes Carl J.
Goldberg Howard N.
Nissan Motor Company Limited
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