for shielding and power return. For microwave printed circuits, transmission lines can imprimat circuit doua straturi be laid out in a planar form, such as stripline or microstrip, with dimensions carefully controlled to ensure consistent impedance. In RF and fast switching circuits, the inductance and capacitance of the printed circuit board conductors
signals at high frequencies, great care must be taken in designing the tracks to match the impedance 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 straturi circuit doua imprimat impedance, the impedance will be controlled by
the PCB and has the role of a reference indicator for the components on the PCB. Graphics and text on a circuit board's PCB are usually printed with a non-conductive permanent epoxy ink. imprimat doua circuit straturi The color is usually white, although other colors are available: yellow, black, blue, red. Screen printing is used to render useful information