Sure they are expensive, but what you propose will probably cost more in design,
assembly, testing, replacing tested parts at least twice, troubleshooting,
safety circuits, mechanical layout including air flow. I run my whole house from
a 48 volt battery system with a 4kw solar array and I use the Xantrex SW4048
(4kw 48volt) sine wave inverter/grid tie. Believe me, you cannot make one any
cheaper than this one.
http://www.gridtie.com/products/hybrid/sw.html
The voltages you would be working with are too lethal to risk. Even 48 volts
will send you into orbit if you're not careful.
http://www.vvalley.com/solar to see a picture of my system.
Rick


"Richards, Justin P" wrote:

> 240v inverters are expensive (I know batts and panels are also expensive),
> so I was considering if it was possible (apart from being *extremely
> dangerous*)to have 2 banks of 18 x 12v batts so I have a DC supply of
> 240-0-240.  Could cheaply test design using 9v batt to begin with.
>
> Then perhaps a AB amplifier driven with a 50hz sine wave to power a 250vac 5
> amp load. (If you think I have NOT thought about it in-depth then you might
> be right)
>
> Not too familiar with amplifier design but think it would also make an
> excellent power supply for a massive power audio amp.
>
> I was considered that transistors don't handle such high voltage rails but
> then they must use some sort of transistor on the output of inverters.
>
> Is this line of thought way off.
>
> Justin
>
> --
> http://www.piclist.com hint: The PICList is archived three different
> ways.  See http://www.piclist.com/#archives for details.

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.