> But if the output of the invertor was fed through a 1:1 transformer, > this would remove some of the harmonics - but would it be enough I > wonder ?. > > Why - because a transformer is an inductor and the impedance goes up > with frequency.
Ah, but if memory serves the output waveform is related to the rate of change of the input waveform, so if you feed a series of steps in (modified sine wave made from lots of square waves added together) you will get a series of spikes out, which is even worse! George "Bungle" Eycott
