发明名称 |
Method of trimming precision resistors |
摘要 |
A method for trimming precision resistors which includes forming a helical groove in a conductive film coating on a cylindrical core. Final trimming includes forming discrete circular depressions in the film coating by using a pulsed laser. This method enables the manufacture of precision resistors having a tolerance of 0.25% or better.
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申请公布号 |
US4566936(A) |
申请公布日期 |
1986.01.28 |
申请号 |
US19840668443 |
申请日期 |
1984.11.05 |
申请人 |
NORTH AMERICAN PHILIPS CORPORATION |
发明人 |
BOWLIN, STANLEY L. |
分类号 |
H01C17/242;(IPC1-7):B23K9/00;B44C1/22;C23F1/02;H01C10/00 |
主分类号 |
H01C17/242 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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