Impedance calculator.

Copyright © 1997 Harry Broeders.

This page contains a Java Applet. A Java Applet is a small Java program that could run in a web browser. This technology is deprecated now and is no longer supported since 2017, see Wikipedia. But it is still possible to run this software in Google Chrome or Microsoft Edge by installing an extention or add-on, see:

Enter your own electrical network and the applet will draw the impedance graph! See here for instructions how to enter an electrical network.

Sorry if you see this... your brouwser isn't capable of running Java applets!

Instructions how to enter an electrical network.

This impedance calculator can only calculate the impedance graph for passive networks. This means that the only components you can use are:

A value can be entered in scientific notation. For example 1E3 or 3E-6. The decimal dot is not supported so a value of 1.25 should be entered as 125E-2.

With the three components R, C and L you can create electrical networks by connecting them in parallel (entered as // or /) or in series (entered as +). // has precedence over +. You can use ( and ) to specify the precedence.

For example: The following electrical network:
Example of an electrical network
Should be entered as: (R(100)+L(3E-4))//(R(100)+C(1E-6))

This applet is also available at:

This applet has inspired several people: