Metal working – Method of mechanical manufacture – Electrical device making
Patent
1987-10-02
1989-05-02
Goldberg, Howard N.
Metal working
Method of mechanical manufacture
Electrical device making
29593, 29836, 29740, H01C 1706, H05K 1304
Patent
active
048255360
ABSTRACT:
Fabrication of an electronic circuit board is carried out by forming a predetermined number of resistors having various resistances based on a circuit design stored in a memory on a nonconductive substrate and dividing the nonconductive substrate into discrete resistors, then mounting the discrete resistors on a circuit board and testing operation characteristic thereof; and when some resistors having resistances which are not suitable to obtain a predetermined operation characteristic exist in the above-formed resistors, the resistances are corrected, and electronic circuit board having corrected accurate electric constants is obtained; and thereby a complete electronic circuit boards are fabricated by repetition of above-mentioned respective steps.
REFERENCES:
patent: 4307832 (1981-12-01), Taki et al.
patent: 4646057 (1987-02-01), Reynolds
patent: 4694568 (1987-09-01), Morelli et al.
Itemadani Eiji
Mori Kazuhiro
Murakami Shuichi
Goldberg Howard N.
Matsushita Electric - Industrial Co., Ltd.
Ross Taylor J.
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