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在分析一些小电子产品的工作原理时,常需绘出其印制板图,然后根据印制板图绘出其电路图,根据电路图对该产品进行分析。由此可知,绘制电路印制板图是基础而关键的。在此,笔者介绍一种简单易行的方法。在绘印制板图时。先用一张白纸蒙在电路板反面。然后轻轻压按白纸,使线路板上元件脚刺穿白纸或在纸上留下痕迹,然后对照实物,用绿色等浅色水彩笔绘出铜箔连线,绘完后还可用复印机复印放大。经过这样处理的图面清洁、明了、还能节省很多时间。
In analyzing the working principle of some small electronic products, it is often necessary to draw the printed board diagram, and then draw the schematic diagram of the printed circuit board, according to the circuit diagram of the product for analysis. From this we can see that the drawing circuit board diagram is the foundation and the key. Here, I introduce a simple and easy way. When you are drawing a board First with a piece of white paper on the opposite side of the circuit board. Then gently press the white paper, so that the circuit board components pierce the white paper or leave traces on the paper, and then control the physical, with green and other light-colored watercolor pen draw copper connection, can also be used after the copier Copy enlargement. After this treatment of the surface clean, clear, but also save a lot of time.