Square to Sine Wave converter

[west]

I have an inverter that puts out a nice 120v square wave. The inverters that
put out a pure sine wave are expensive. Does anyone know where I can obtain
schematics to build a square to sine wave converter fo my inverter? Thanks
in advance.
Cordially,
west

 

[Joe G \(Home\)]

There must be a reason why sine wave inverters are expensive..... Pehaps you
should find out why.

It may be the expensive of the square to sine coversion may be more
expensive than a direct pruchase of a sine wave inverter... after
considering the design, labor and material costs.

Aaah! Google gave lots of hits... including this one.
http://www.elci.tuc.gr/downloads/Kalaitzakis/J.19.pdf

Seems the complexity of design.... and cost of parts are what you are paying
for...... If I spent years on a design.... I wouldn't give it away for free.

JG