Branch Snyder Department of International Ltd. Shenzhen-Electronic Technology Co., Ltd. - The Department of Electronic Technology Company is a professional custom single-sided, double-sided, 2-40 storey density multilayer professional supplier, to provide customers with high-precision high quality Shenzhen board, quality assurance, reasonable prices. For high-frequency circuit also consider how to suppress high frequency radiated noise, it is: be bold ground, in order to reduce the noise on the impedance; over the ground, that is in addition to traces of the transmission signal, the other part of the whole as a ground. Do not Have a large area of ??copper foil used. Ground should form a loop, to prevent high-frequency radiation noise, but surrounded by the loop area is not too large, so the instrument is in a strong magnetic field, the induced current. However, if only the low-frequency circuit, avoid ground loops. The best of digital and analog power isolation, separated from ground arrangement, Guangdong circuit board material, if there is A / D, the printed circuit board material, only at a single point of common ground here International Ltd. Shenzhen Branch Snyder Newell Year Electronic Technology Co., Ltd. - The Department of Electronic Technology Company is a professional custom single-pane, double sided, multilayer 2-40 storey density professional supplier, to provide customers with high-precision, high-quality circuit board in Shenzhen, quality assurance, Reasonable prices. Early 20th century to the late 1940s, is the infancy of the PCB substrate material industry. Its development is characterized mainly in: a substrate material resin of this period, the reinforcing material and the insulating substrate in large numbers, the flexible circuit board materials, technical preliminary exploration. These are the most typical printed circuit board substrate material - the advent and development of CCL, to create the necessary conditions. On the other hand, the metal foil etching method (subtractive method) for the mainstream PCB manufacture circuit manufacturing technology to give the initial establishment and development. It CCL In the constitution, determine the characteristics of the condition, played a decisive role. Integrated circuit board material | Newell Year (Advisory) | Guangdong circuit board materials are provided by Shenzhen-Electronic Technology Co., Ltd. Department. Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com) Guangdong Shenzhen, printed circuit board leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Newell create leadership with the staff warmly welcome all inquiries negotiations to create Newell create a better future.