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FREE TOOLS
ViewMate - an excellent
Gerber viewer that accepts most aperture list
formats.
ViewMate
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Convert -
a useful conversion program for
converting almost any units of distance,
area, volume, power, energy, etc.
Convert
UltraCAD - a freeware program for calculating
characteristic impedance for PCB traces. This
site also has good
technical papers regarding PCB layout.
UltraCad
FreeDiff -
a freeware text comparison utility.
FreeDiff
Saturn PCB - a very nice PCB Calculator.
Saturn PCB Design
Frigus Primore - a great supply of thermal
management resources.
Frigus Primore Online
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