I'm tasked with designing a 12 VDC (from lead storage batteries) to 24 VAC (peak to peak, sinusoidal, and unregulated) 300 Watt converter. This will be a consumer quality product--something to do with solar panels. Rather than completely reinvent the wheel, I thought I could find something close online. I've only come up with goofy amature designs. One block might be a 12V to -12V inverter. I haven't found a low voltage efficient power converter for this yet. Is there anywhere I can go for professional quality schematics for this?