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For many types of electronic and computer devices printed circuit boards are the basis. Printed circuit boards are composed of conductive layers. These layers are made of copper. Each layer is divided by an insulating layer and then laminated together to form a printed circuit board. On the boards there are drilled holes which are called “vias”.  These “vias” are electroplated to make the connection electrical. The PCB manufacturing process is very complex and complicated process.

PCB Manufacturing Process

Circuit Board Manufacturer starts with a substrate and then place a copper layer. On placing a Pcb Circuit copper layer on it they “etch” that layer to remove the unnecessary copper, leaving the proper amount of copper area required for the application. Then the proper quantity of vias is drilled into the layers with either a tungsten carbide drill or a laser. Any areas of the board where components will be placed are plated. With a screen printing process texts are printed on the board. Then these boards are ready for testing. After completion of testing process these boards are ready for components for the desired application. This whole process is called as “populating”.

History of Printed Circuit Boards

An Austrian engineer named Paul Eisler was the inventor of printed circuit boards. He made his first PCB in the 1930’s. He completed his graduation from Vienna University in 1930. The company named Camberwell lithography offered him a contract. The contract gave the privilege to his idea away to the company. Finally, his invention was noticed by the US military and then they integrate this technology into bomb detonators to counter German improvement in the field.

Applications

PCB circuit design was mainly used in military applications. Nowadays PCB’s are used as the basis for millions of components that includes computers, mobiles, radios, televisions etc. If you open any electronic device, you will find a green colored board with copper colored lines and dots i.e. printed circuit board.

Any industry you name, Printed Circuit Boards have become an integral part of the processing world.

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Author: ChipDipvideo
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Added: August 26, 2010

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