If you have an Modified Sine Wave inverter and suspect you need a True Sine Wave inverter, please note there is no ‘filter’ or ‘retrofit’ you can apply to the output of an Modified Sine Wave inverter to ‘clean up the output’ or ‘turn it into True Sine Wave’.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.