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印刷电路板是各种电子元器件及线路的高度集中体,其设计布局的好坏直接影响电子设备的可靠性。在工作频率较高时,更应注意印刷电路板的设计和制作。一、设计印刷线路板可作电路中各元器件的支撑件,提供电路元器件之间的电气连接。为便于装配、检验和维修,设计时可用标记将元器件的型号、名称,电源电压值,工作时额定电流值等标注在印刷电路板上。 1.线路布设:印刷线路板有单面板、双面板和多层板。印刷板线路的布设有人工布设和计算机辅助设计,前者用于较为简单的印刷电路,后者用于较为复杂的线路及元器件布设密度较高的印刷电路。印刷板面数以尽量少为宜,印刷导线最好相互垂直、斜交或弯曲走线,应尽量避免相互平行,以减少耦合及发生反馈。在可能情况下,印刷导线尽可能粗、短,
Printed circuit board is a high degree of concentration of various electronic components and circuits, the design layout of a direct impact on the reliability of electronic equipment. In the higher working frequency, should pay attention to the design and manufacture of printed circuit boards. First, the design of printed circuit board circuit can be used for the support of various components, providing electrical connections between circuit components. For ease of assembly, inspection and maintenance, the design of the components can be marked with the model name, power supply voltage, rated current value at work, etc. marked on the printed circuit board. 1. Circuit layout: printed circuit boards have single-sided, double-sided and multi-layer board. Printed circuit board layout with artificial layout and computer-aided design, the former for simpler printed circuit, the latter for the more complex layout of circuits and components of higher density printed circuit. Printed board to minimize the number of appropriate, the best printed conductors perpendicular to each other, skewed or bent alignment, should be avoided as far as possible parallel to reduce coupling and feedback. Where possible, the printed wire as rough, short,