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Software for PCB servicing, boardviews how they are created Boardview files containing information about printed circuit boards, their components, used signals, test points and more (popular in laptop pc service) These files may have following extensions:
Protel . pcb file wont open in Altium I have a protel ( pcb) file that I need to open in Altium, but the import wizard says that protel files have the extension ddb I don't even know which software the pcb extension belongs to - how
What does n o and n c mean on a schematic diagram? N O and N C stand for normally open and normally closed contacts These are connections that are part of a relay (or relay like components, ex Solid state relays or modules)
AGND and GND - Electrical Engineering Stack Exchange AGND and GND are generally "Analog Ground" and "Everything Else Ground" The general reason they are separated is that AGND is the reference to sensitive analog circuits (amplifiers, ADCs, DACs, etc ) and GND is the reference for general digital circuits (gates, shift registers, MCUs, CPUs, FPGAs, etc ), which can impart a lot of switching noise onto their grounds