如果一块印刷线路板在其谐振频率上振动时,元件和连接件就会振松。普通矩形板的谐振频率可从参考书中找到,但有关奇形板的资料却很少,因此本文的叙述是有益的。当印刷线路板(PCB)振动时——尤其在其谐振频率上振动时,接插件松开、元件及引线拉断、印刷线路板甚至可能破裂,当然所有这些状态都意味着控制线路出了故障。为避免破坏性的谐振振动,第一步就是确定使板谐振的频率。传统上,印刷线路板多半是矩形的,并且在边缘的周围不是采取连续地支撑就是采取若干点支撑。关于这些设计的谐振频率在现有的技术文献中容易找到。然而在异乎寻常的新应 If a printed circuit board vibrates at its resonant frequency, the components and connectors loosen. The resonance frequency of an ordinary rectangular plate can be found in the reference book, but the information about the odd plate is scarce, so the description in this article is beneficial. When a printed circuit board (PCB) vibrates - especially when it vibrates at its resonant frequency, the connector loosens, the components and leads are pulled apart, and the printed circuit board may even rupture, all of which, of course, means that the control line has failed . To avoid damaging resonant vibrations, the first step is to determine the frequency at which the plate resonates. Traditionally, printed wiring boards are mostly rectangular, with several points of support around instead of being continuously supported. Resonance frequencies for these designs are readily found in prior art literature. However, the new exception should be