Why the PCB map on the green line, if I directly to the green line of the PCB map to the manufacturers to do more samples can be more
The green line is wrong, and the spacing is set, the pitch is changed. PCB (PrintedCircuitBoard), the Chinese name for the printed circuit board, referred to as printed circuit board, is one of the important components of the electronics industry. Almost every electronic device, small to electronic watches, calculators, large computer, communication electronics, military weapons systems, as long as there are integrated circuits and other electronic components, for their electrical interconnection between the use of printed circuit board The In the larger electronic product research process, the most basic success factor is the product of the printed circuit board design, documentation and manufacturing. Printed board design and manufacturing quality directly affect the quality and cost of the entire product, and even lead to the success or failure of commercial competition.
The general line of fire is red, the ground is yellow and green, the zero line is black
Single-phase 220V, the general red for the line of fire, zero line blue, ground is dedicated yellow and green color
The country does not have the relevant provisions, I often responsible for enough to buy a variety of models of cable, a large number of cable a small point, a small size of the cable a multi-point, mainly to the size of the cable tray manufacturers can put down the number of cable prevail, but also have to meet After the cable is put, it can be transported and shipped. With the specifications of the cable, different manufacturers can wrap the maximum number of cables is different, such as the specific number, it is recommended to ask manufacturers directly.
