Modern technology has radically changed our lives. From toys and cars to phones and televisions, we are all surrounded by various forms of technology. Our gadgets are able to function because they have one very important component: a printed circuit board.
Printed circuit boards, sometimes abbreviated to PCBs, form the heart and brain of almost every electronic device. They connect the various components used by the device, including LEDs and microchips, while using up very little space. Pcbnet have made it possible to make smaller but more powerful devices.
Printed circuit boards are composed of a substrate and one or more layers of copper. The substrate is made up of a non-conducting material, usually fiberglass or various plastics, preventing the circuits embedded on it from touching each other in unwanted places.Visit this site www.pcbnet.com for more information. Commonly called short circuits, these can make the device malfunction or destroy the printed board.
The substrate also acts as a support, holding the embedded circuits and the other components together. Furthermore, it provides rigidity to the printed circuit board, adding some protection from mechanical shocks, although some models have purposely made flexible circuit boards.
Meanwhile, the copper layer forms the circuits found on the printed circuit board. Copper is relatively cheap, electrically conductive, and resistant to corrosion, making it a good choice for the circuit board. During the manufacturing process, a specified pattern is etched on the copper layer.
This forms copper paths which will function as circuits connecting the other components of the circuit board. The circuit pattern is usually complex, since manufacturers typically want their boards to fit more circuits in less space. The copper circuits are also coated with a layer of tin-lead to further protect the copper from corrosion and oxidation.
Different Types Of Printed Circuit Boards:
There are generally three types printed circuit boards, classified according to the number of layers of conducting material. Some only have one layer of conducting material. Commonly called single-layered boards, they are easier to manufacture but have limited functionality. They are commonly used in small, basic devices. Double-layered boards have conducting material on both of their sides. They allow more circuits and electrical components to be embedded on their surfaces, but are also harder to produce.
Special holes on the board, called plated through holes, are used to form electrical connections between the two conductive layers. They contain a layer of conductive material in their interior surfaces. Finally, multi-layered boards have more than two conducting layers. The layers of conductors alternate with layers of insulators. Connecting two or more layers of layers of conductive material uses the same mechanism described above, except that the depth of the hole is varied to connect to the desired layers.
Other components can be attached to the printed circuit board, depending on the type of device in which it will be used. Light-emitting diodes, also known as LEDs, can be attached to serve as indicators. Capacitors, which can hold electrical charges, can be used to regulate electric currents on the board. Microchips, formally known as integrated circuits, can be applied to increase the capabilities of the circuit board. They are similar in structure to other circuit boards, but they are usually more complex and contain more circuits.
Components can be attached using two popular methods.The first method, called “through hole technology”, involves making components with long wires. These wires, called leads, are connected to the side of the board opposite the components. The second method, called “surface mount technology”, involved attaching the components directly on the board using a solder paste, then reheating the board to melt and seal the solder.
The printed circuit board has in arguably made a huge impact on the world of electronics. Without it, the miniaturization of technology might have never happened. People might still be stuck with using calculators the size of their kitchens!