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Various online calculator for electronics design

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1st Calculator

1st Calculator

An expression calculator and unit converter which allows you to directly enter an expression to be evaluated. It is a handy and nice skinnable replacement for the standard Windows calculator with many additional features.

http://www.romanlab.com/1stcalc/

Amateur Vertical Antenna Calculator

Amateur Vertical Antenna Calculator

This calculator is designed to give the vertical length (height) of a particular antenna, for the frequency and wavelength chosen.

http://www.csgnetwork.com/antennaevcalc.html

Animated Standing Wave Calculator

Animated Standing Wave Calculator

Visualizing what a standing wave looks like is always difficult. Type in any reflection coefficient, VSWR, mismatch loss, or return loss and this Java applet will not only convert among the values, but it will also present an animation of the incident, re

http://www.bessernet.com/Ereflecto/tutorialFrameset.htm

Beautiful Calculator

Beautiful Calculator

Replacement for the standard Windows calculator with many additional features.

http://www.rayslab.com/calculator/

Capacitance-Frequency-Inductance calculator

Capacitance-Frequency-Inductance calculator

http://www.opamplabs.com/cfl.htm

Constructive Reals Calculator

Constructive Reals Calculator

An RPN calculator applet and supporting Java library.

http://www.hpl.hp.com/personal/Hans_Boehm/crcalc/CRCalc.html

Cubical Quad Antenna Calculator

Cubical Quad Antenna Calculator

http://www.qsl.net/kd4sai/quad1.html

Current limiting resistor calculator

Current limiting resistor calculator

Want to know what resistor to use with some led? Take this calculator for a spin and see how it goes.

http://metku.net/index.html?sect=view&n=1&path=mods/ledcalc/index_eng

Cylindrical Single-Layer Inductor Calculator

Cylindrical Single-Layer Inductor Calculator

http://www.mogami.com/e/cad/coil-01.html

dbm-Voltage-Impedance calculator

dbm-Voltage-Impedance calculator

http://www.opamplabs.com/dbm-v-z.htm


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