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		<title>EEVblog Electronics Resource Wiki - User contributions [en]</title>
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		<updated>2026-10-27T15:30:15Z</updated>
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	<entry>
		<id>https://www.eevblog.com/wiki/index.php?title=Online_references,_utilities,_calculators_etc.&amp;diff=3713</id>
		<title>Online references, utilities, calculators etc.</title>
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				<updated>2018-02-07T09:32:22Z</updated>
		
		<summary type="html">&lt;p&gt;91.4.198.248: /* PCB tools */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;==Cable tools==&lt;br /&gt;
[http://www.epanorama.net/index.php?index=calc_cable Cable resistance/rating calculator]&lt;br /&gt;
[http://en.wikipedia.org/wiki/American_wire_gauge#Table_of_AWG_wire_sizes Wire sizes] AWG, mm2 sizes, resistances etc.&lt;br /&gt;
&lt;br /&gt;
== Ohm's Law Tools ==&lt;br /&gt;
&lt;br /&gt;
[http://www.rcrowley.com/eirp.htm Voltage - Current - Resistance - Power Calculator] &lt;br /&gt;
&lt;br /&gt;
[http://www.rcrowley.com/rfc.htm Resistance - Frequency - Capacitance Calculator] &lt;br /&gt;
&lt;br /&gt;
[http://www.rcrowley.com/cfl.htm Capacitance - Frequency - Inductance Calculator] &lt;br /&gt;
&lt;br /&gt;
[http://www.rcrowley.com/dbm.htm dBm - Voltage - Impedance Calculator] &lt;br /&gt;
&lt;br /&gt;
[http://www.rcrowley.com/zenerreg.htm Zener Voltage Regulator Calculator]  &lt;br /&gt;
&lt;br /&gt;
== PCB tools==&lt;br /&gt;
&lt;br /&gt;
[http://www.desmith.net/NMdS/Electronics/TraceWidth.html PCB Track width calculator] Maximum current, temperature rise above ambient, cross-section etc.&lt;br /&gt;
&lt;br /&gt;
[https://isodesign.isola-group.com isoStack] Tool for designing layer stackups featuring Isola products, Impedance calculator for SE and DIFF microstrip/stripline configurations&lt;br /&gt;
&lt;br /&gt;
[https://www.multi-circuit-boards.eu/en/pcb-design-aid/impedance-calculation.html Impedance Calculator] Tool for calculating the impedance of high frequency printed circuit boards. Supported methods: Surface Microstrip, Coated Microstrip, Edge-Coupled Surface Microstrip and Edge-Coupled Stripline (symmetrical)&lt;br /&gt;
&lt;br /&gt;
== Resistance Calculators ==&lt;br /&gt;
[http://www.eevblog.com/files/ResCAD20.zip Resistor CAD 2.0 by Terry Harris from Vader Systems]&lt;br /&gt;
&lt;br /&gt;
[http://www.qsl.net/in3otd/parallr.html IN3OTD series and parallel resistance calculator]&lt;br /&gt;
&lt;br /&gt;
[http://koti.kapsi.fi/jahonen/Electronics/ResOptimizer/ ResOptimzer (WIN32) from EEVBlog forum member jahonen ]&lt;br /&gt;
&lt;br /&gt;
[http://sparks.gogo.co.nz/resistor_paralleler.html Javascript resistor network solver from EEVBlog forum member sleemanj]&lt;br /&gt;
&lt;br /&gt;
[http://jansson.us/resistors.html resistor calculator from jansson ]&lt;br /&gt;
&lt;br /&gt;
==RF Design utilities==&lt;br /&gt;
&lt;br /&gt;
[http://www.aade.com/filter.htm AADE Filter Design V4.5] Design and analyse passive filters in both the frequency and time domain.&lt;br /&gt;
&lt;br /&gt;
[http://www.janson-soft.de/amateurfunk/rfsim99/rfsim99.exe RFSim99 by Stewart Hyde] RF simulation with S-parameters. Not only for filters.&lt;br /&gt;
&lt;br /&gt;
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)&lt;br /&gt;
&lt;br /&gt;
[http://www.everythingrf.com/rf-calculators RF Calculators] A series of RF Calculators optimized for Desktops, Tablets and Mobiles - Attenuator Calculators, Unit Conversions, Skin Depth Calculator, Link Budget Calculator and many more.&lt;br /&gt;
&lt;br /&gt;
[http://www.everythingrf.com/rf-calculators/microstrip-patch-antenna-calculator Microstrip Patch Antenna Calculator] This calculator calculates the length and width of a patch antenna based on the frequency, dielectric constant of the dielectric and the height of the thickness of the patch antenna substrate.&lt;br /&gt;
&lt;br /&gt;
[http://www.everythingrf.com/rf-calculators/skin-depth-calculator Skin Depth Calculator] Enter the frequency and the characteristics of the material to calculate the skin depth.&lt;br /&gt;
&lt;br /&gt;
[https://isodesign.isola-group.com/ Power Handling &amp;amp; Impedance Calculator] for PCB tracks on Isola dielectic materials, insertion losses&lt;/div&gt;</summary>
		<author><name>91.4.198.248</name></author>	</entry>

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