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| Yes... but they are too large, cost too much, and don't provide that perfect sinewave we are looking for.... |
What is "they"? I'm guessing you're talking about inverters.
Too large? Yes, well what did you expect for a device that has to put out several amps at high voltage? I'll bet whatever it is you're trying to power won't be small, either, for the very same reason.
Cost too much? They are indeed costly, but so are all of the methods I listed above, if you want high quality.
No perfect sine wave? The better quality inverters do put out decent-quality sine waves. (What you get out of the wall isn't a perfect sine wave, either!) Yes, the cheap ones put out nasty waves, but that's what you're stuck with if you insist on going DC->AC->DC.
Quote:
| I don't think you'd have enough current left to do anything useful at that point... (from batteries) - however this is a statement derived from a 3-year old memory of a physics class, and a large estimation. |
From a car battery, you may have enough current. You do bring up an interesting point. KTpG, how much current do you need at the operating voltage?
Remember, the power you can get out of any system is largely constant, up to its current or voltage limits. If you have something that will put out 1V at 1A, you can probably convert that to 10V at 100mA or 100V at 10mA, less any losses in the conversion process. It's all 1W no matter how you look at it.
