pcb方法(国外英文资料).doc

pcb方法(国外英文资料) A method for manufacturing a printed circuit board. Love to engage in some electronic production, but when the printed circuit board production will have a headache Use glue, paint, draw knife and other methods, but the process is complex, time-consuming Long, and ineffective. You fill the line, but if you make a standard, good The board also is Nabuchushou, do complex is not. Through the network On the exchange, plus some of his own experience, to find a rapid and cheap system Version, full cost just a one-time investment of 260 yuan, can be produced with computer The design of the single and double board as like as two peas, can be fully capable of the general topic The task, to introduce here: First of all, to the market to purchase a machine, is specially used for pressing documents and photos Plastic skin packaging machine, as shown in Figure 1, in the Beijing Zhongguancun market everywhere, Cheap price of only 220 yuan, can through the A3 format of the paper. Look for a few Zhang Ping The prints did not cut the adhesive paper, only the paper, namely light yellow light surface The side slip. It is best to buy a special paper, online sale, A4 picture The approximately 40 yuan 100. I was through to the online mail order. As long as the purchase to the above Two things, you can board the trial. In the computer through the PROTEL99 software design of printed circuit plate making good layout, design construction Consider the following discussion: The 1. line fine width not less than 15mil. 2. as far as possible the use of SMD components. The use of SMD components can reduce the volume and improve the reliability Of. Especially the superior is to significantly reduce workload. 1206 specifications of the patch Resistance and capacitance is suitable for manual welding, cross line available 0 ohm resistor instead. set up Timer 0 ohm common integrated circuits lead to wear a wire, 1206 gauge wear two Line without any problems. 0805 and on smaller SMD compo