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浏览/检索结果: 共2条，第1-2条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择发表日期升序发表日期降序作者升序作者降序提交时间升序提交时间降序题名升序题名降序 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 收藏  |  浏览/下载：1/0  |  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. 收藏  |  浏览/下载：14/0  |  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.