Circuit diagram for a sine wave inverter?
Answer:
You don't give us much help without current and voltage information, so let me provide what may be the simplest possible answer to your question -- a simple 1:1 isolation transformer with windings capable of handing your input. Depending upon which way you choose to flip the leads on the output, you'll either have a) the same signal in phase or b) 180 degrees out of phase (inverted).
OK, having inverted your sine wave, let me consider what you may *also* have meant by your question... any chance you were looking for a DC to AC inverter with a sine wave output? If so, I assume you understand why a sine wave may be needed for your load, which I'll assume is primarily inductive.
Here's a link to one that does a quasi-sine wave, but at low power. You can take replace the BS170's with something heftier and use it to create a higher current supply, however. This one produces a waveform that is good enough for most motor and transformer (inductive) loads:
http://www.discovercircuits.com/andy/dct...
The following does NOT produce a sine wave, and should NOT be used for motor or certain transformer loads...
http://www.i4at.org/lib2/inverter.htm...
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