That is ok - some of us are qualified.

The filter would be just fine. Remember it must pass the current and
handle the voltage and the power rating be all high enough to allow it
to function as a 'passive' filter.

Often high voltage caps across the power line will take out the fast
edges (shunting the RF and middle frequency 'noise'. Remember caps drop
wattage. Some have series resistance and they all have reactance that
drops wattage. Typically L's are present - the inductance of the wire
used and reactance across the lines. If the lines are short - use
inductance or resistance to form the L filter. T's are better.

Martin

On 6/17/2017 5:16 PM, Carl Ijames wrote:
I've heard of some electronic devices having problems running on the output
of a modified sine wave output inverter or small generator that may not have
the best sine wave shape. Would there be any problem using a 1, 2, or 3
stage AC line filter to clean up the output waveform of either, and would it
do any good? They aren't that expensive so adding one to a generator would
seem to me to make a lot of sense. What am I missing?