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VBScript Calculator Index
These calculators are written in VBScript and will function in Internet Explorer and other browsers with VBScript plug-ins. Further information is available in About our calculators
A larger range of calculators is available in Java Script at Calculator Index
Characteristic
Impedance Calculator for the Measurement of PCB Tracks and Coaxial Cables Using
a Vector Network Analyser
An active calculator which computes Delay, Velocity Factor, Effective
Dielectric Constant and Characteristic Impedance of a PCB track.
Circular Capacitor
Calculator
Active calculator for a parallel plate, circular capacitor, showing the
formula by Kirchhoff.
Microstrip
Characteristic Impedance Calculator Using a Formula by Brian C Wadell
An active calculator based on a formula by Brian C. Wadell. Used for
calculating the Zo of PCB transmission lines, showing the formula used.
Microstrip
Characteristic Impedance Calculator
Active calculator using a formula from an article by Rick Hartley, showing
the formula used.
Microstrip
Characteristic Impedance Calculator Using The IPC-2141 Formula
Active calculator using a formula from an article by Polar instruments,
showing the formula used.
PCB Sample Size Calculator for
Relative Dielectric Constant Measurements
An active calculator which selects the optimum size for a circular plane
on a PCB. This is used for making relative dielectric constant measurements
using a Vector Network Analyser.
Pi Attenuator Calculator
Active calculator for resistor values, attenuation, 'impedance',
reflection coefficient, VSWR and return loss of a Pi attenuator.
Relative Dielectric
Constant Calculator for a Circular Capacitor
Active calculator based on a formula by Kirchhoff for a circular
capacitor, showing the equations used.
Resonance Calculator
Active calculator for a capacitor / inductor tank circuit, showing the
formula used.
RF Trap With Attenuators
Active calculator with attenuation, return loss, reflection coefficient
and VSWR . This calculator is specific to the circuit used in the RF Trap With
Attenuators FLEXI-BOX.
Spreadsheet
An Excel spreadsheet with many simple calculations in 'blocks' that can be
built up into fairly complex calculations by simply making the input cell of any
block equal to the result of any other block. There are no locks on any of the
cells and this spreadsheet could make good raw material for building your own
personal version.
T Attenuator Calculator
Active calculator for resistor values, attenuation, 'impedance',
reflection coefficient, VSWR and return loss of a T attenuator.
This calculator is provided free by Chemandy Electronics in order to promote the FLEXI-BOX
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