Resistance test board design and production

[Electronic] Electrical resistance test board design and production 2013-4-5 21: 40 | Publisher: Wonderful Technology | Views: 7503 Electrical resistance is often adjusted in electronic design, such as controlling multiple, LED brightness, speaker volume, and so on. The resistors calculated in the design are often deviated from real applications. The best way is to use the adjustable resistor and select the resistor application that is closest to the resistance. Single adjustable resistors are not easy to save, often get rid of each design, it is necessary to buy, wiring and trouble, it is not convenient to adjust. So I want to design a resistive modulator plate for easy application. Not much nonsense, start design: Established a program through computer design Be Be CDR printing hole design. Performing physical production: Plate selection 160 * 140 * 2mm black ABS board. Be The effect after punching, this batch is indeed, ABS bought him in the field, and there is a bit deviation, and the printing punch is not very accurate. Be All accessories: 1 ABS board, potentiometer 1K 4.7K 10K 1M 470K 100K each 6 potentiometer knobs, 4 copper columns, 4 nuts, one of the wiring column red and black, wires. Production tools: sharp pliers, sloppy pliers, soldering iron, one word screwdriver, American dog. Be Put the corresponding potentiometer direction to the right. Be Hn a good gasket and nut When the power is used, the potentiometer should be rotated to the bottom and put the knob white marked alignment 0 position. Be Column Be Connect all potentiometers together to access the terminal. Be The final product Be The adjustment range is 0 to 1.58M enough. A fixed resistor can be connected in not enough. Friends with no plastic boards can be replaced with a shoe box cardboard, and the logo is directly written directly with a non-adhesive label. Need friends can also go to my Taobao purchase: Finished: http://Item.taobao.com/item.htm? Spm = a1z10.1.w1110722355.3.ozrCLD & ID = 23870560929 Suite: http://Item.taobao.com/Item.htm? Spm = 2013.1.0.0.ci5meh & id = 19738291483 collect invite

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