

Free Tools for Board & PCB Designers
Control Impedance Calculators
- Wire Microstrip
- Wire Stripline
- Edge-Coupled Microstrip
- Edge-Coupled Stripline
- Broad-Coupled Stripline
PCB TOOLS FROM EEWEB
Toolkit of Saturn
http://www.saturnpcb.com/pcb_toolkit.htm
Viewers for PCB Layout Design SoftWare
http://www.cadence.com/products/pcb/Pages/Downloads.aspx
OrCad Light Schematic Capture Tool
http://www.orcad.com/buy/try-orcad-for-free
Gerber Viewer Free Download
http://www.wssi.com/index.php?option=com_content&task=view&id=212&Itemid=213