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长春光学精密机械与物... [1]
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微波介质谐振器自动检测与激光微调
学位论文
2009, 2009
杨国山
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浏览/下载:1/0
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提交时间:2016/02/14
介质谐振器
自动检测
激光微调
Dielectric resonator
Automatic measurement
Laser trimming
The influence investigation of laser cutting path on the resistance of chip resistors (EI CONFERENCE)
会议论文
Lasers in Material Processing and Manufacturing II, November 10, 2004 - November 12, 2004, Beijing, China
Wang Z.
;
Tang J.
;
Yu Q.
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浏览/下载:14/0
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提交时间:2013/03/25
Laser trimming adjusts the resistance of chip resistors accurately. The laser-cutting path that is vertical to the current flow is called transverse cutting. It increases the resistance quickly. The laser-cutting path that is parallel to the current flow is called ordinate cutting. It increases the resistance slowly. Using numerical results of resistance-calculation formula
the influence of transverse cutting on the resistance is analyzed. With resistor-subsection method
the relationship of resistance and ordinate cutting is studied. And quantitative formulae of them are given. The conclusions can provide some control strategies to improve the trimming precision and trimming efficiency.
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