In addition, in electronic products with both analog and digital circuits, the printed boards often separate their ground lines to form an independent grounding grid, which can also be used as a basis for identification and judgment. When the factory is wiring the printed circuit board, in order to prevent self-excitation and anti-interference, the ground copper foil is generally set to the widest ( high-frequency circuits often have large-area grounded copper foil), the power supply copper foil is second, and the signal copper is used. The power and ground lines can also be found from the three-terminal regulator pins. The integration of the schematic-, simulation- and layout data into one user interface, and the integration of these data into one file is revolutionary to the work of the design engineer. At this point, the conversion of Protel 99Se PCB to the schematic diagram. TARGET 3001 is a CAD-/CAE-software for PCB design. Converting a Schematic into a PCB Layout, or PCB to schematic diagram services.
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Taking the power supply circuit as an example, the negative terminal of the rectifier connected to the secondary of the power transformer is the positive pole of the power supply, and a large-capacity filter capacitor is generally connected between the ground and the ground, and the capacitor casing has a polarity mark. Featured Protel free downloads and reviews at WinSite. The FreePCB software can support up to 16 copper layers.
PROTEL PCB DESIGN SOFTWARE FREE DOWNLOAD FOR WINDOWS 10 FULL
Even though it doesn’t have an auto-router tool, a free web based routing tool called Freerouting can be used for partial or full auto-routing. Correctly distinguish the ground, power and signal lines of the printed board. Free PCB is an open source PCB design software for Windows systems.