Eff('Expression','Frequency')

Description

This function calculates the effective value of ‘Expression’ with a fundamental frequency of ‘Frequency’.

The following formula is used to calculate the effective value:

Example

For an alternating current course with a frequency of 0.1 kHz, which is overlaid by a second AC voltage with 0.5 kHz, the effective value of the voltage should be determined for both frequencies.

Solution

In the figure below the blue curve shows the AC current signal and the green curve shows the effective voltage with calculation frequency 0.5 kHz. The red straight line shows the effective voltage with calculation frequency 0.1 kHz.