### IZ Applet: Example 1

The IZApplet is designed to be scripted with an analytic expression for
current as a function of frequency, I( f), and phase as a function of
frequency, Phase(f). It can be use to simulate an arbitrary AC
circuit as a "black box." The script author must, of course,
calculate the desired impedance function.

**Example:** What type of device is connected to the AC
source? Use the slider to vary the frequency and then rest the mouse on the
meter to read the values.

You can also use JavaScript to plot the instantaneous voltage as a
function of time or the *rms* voltage as
a function of frequency.