be taken in designing the tracks to match the impedance circuit dublu imprimat placat of the upstream and downstream components. The longer the route or the higher the frequency, the better adaptation is required. When producing the printed circuit with controlled impedance, the impedance will be controlled by acting on the dimensions of the
of a reference indicator for the components on the PCB. Graphics and text on a placat imprimat circuit dublu circuit board's PCB are usually printed with a non-conductive permanent epoxy ink. The color is usually white, although other colors are available: yellow, black, blue, red. Screen printing is used
simplest printed circuit boards is the double layer board. It has copper on both sides, which are called outer layers; Multilayer sandwich boards with additional internal layers of copper and insulation are called multilayer. PCBs can be single-sided (one layer of placat dublu imprimat circuit copper), double-sided (two layers of copper on both sides of an insulating