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==Cable tools== | ==Cable tools== | ||
− | [http://www.epanorama.net/index.php?index=calc_cable Cable | + | [http://www.epanorama.net/index.php?index=calc_cable Cable reistance/rating calculator] |
[http://en.wikipedia.org/wiki/American_wire_gauge#Table_of_AWG_wire_sizes Wire sizes] AWG, mm2 sizes, resistances etc. | [http://en.wikipedia.org/wiki/American_wire_gauge#Table_of_AWG_wire_sizes Wire sizes] AWG, mm2 sizes, resistances etc. | ||
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== PCB tools== | == PCB tools== | ||
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[http://www.desmith.net/NMdS/Electronics/TraceWidth.html PCB Track width calculator] Maximum current, temperature rise above ambient, cross-section etc. | [http://www.desmith.net/NMdS/Electronics/TraceWidth.html PCB Track width calculator] Maximum current, temperature rise above ambient, cross-section etc. | ||
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==RF Design utilities== | ==RF Design utilities== | ||
+ | ===RF Filter design=== | ||
[http://www.aade.com/filter.htm AADE Filter Design V4.5] Design and analyse passive filters in both the frequency and time domain. | [http://www.aade.com/filter.htm AADE Filter Design V4.5] Design and analyse passive filters in both the frequency and time domain. | ||
[http://www.janson-soft.de/amateurfunk/rfsim99/rfsim99.exe RFSim99 by Stewart Hyde] RF simulation with S-parameters. Not only for filters. | [http://www.janson-soft.de/amateurfunk/rfsim99/rfsim99.exe RFSim99 by Stewart Hyde] RF simulation with S-parameters. Not only for filters. | ||
− | RFSim99 is freeware software that helps with impedance matching and can simulate RF circuits. Plots Amplitude and phase response, different display styles including Smith chart. Uses one and two-port Scattering parameters. You can for example import an S-parameter file of your filter from your network analyser and have the software calculate matching. Requires | + | RFSim99 is freeware software that helps with impedance matching and can simulate RF circuits. Plots Amplitude and phase response, different display styles including Smith chart. Uses one and two-port Scattering parameters. You can for example import an S-parameter file of your filter from your network analyser and have the software calculate matching. Requires Windows 95, 98, NT or 2000 (WinXP virtual machine runs it just fine) |
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