printed circuit made of a thin fisiere Gerber polyamide of 0.1-0.3 mm with a rigid printed circuit on an FR4 substrate. These printed circuits are used more and more lately, having the advantage of their flexibility. A PCB may have an inscription or screen printing that identifies components, test points or identification text. Screen printing does
all electronic products and some electrical products. Currently, the production and assembly of printed circuits Gerber fisiere are automated. Electronic computer aided design software is available to do much of the layout work. Multilayer PCBs allow for much higher component density because the component paths on the inner layers would occupy the space between
an internal layer Gerber fisiere may be mostly solid copper to act as a ground plane for shielding and power return. For microwave printed circuits, transmission lines can 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