As someone posted before, newer power supplies don't really care, from ver 2.3 it seems.
Parameter Minimum Nominal* Maximum Unit
Vin (230 VAC) 180 230 265
Vin Frequency 47 -- 63 Hz
Not too sure about the rest though
Sorry for the long story!
I am no electrical expert but thought that all PSU’s using 12 volt batteries had an inverter as standard to convert the 12v DC battery to 220volt AC to power the electronics no matter what version software. Please correct me if I am wrong.
Inverter - A traditional inverter draws power from a fixed DC source typically a comparatively fixed source like a car battery or a solar panel, and uses electronic circuitry to “invert” the DC power into the AC power. The converted AC can be at any required voltage and frequency with the use of appropriate equipment, but for consumer-level applications., the most common combination is probably taking the 12V DC power from car, boat or RV batteries and making it into the 220V AC power required for most everyday uses.
Generators - A conventional generator is nothing more than an engine connected to an alternator and run at a speed that produces the desired AC frequency, regardless of the load on it (as the load increases the engine throttles up to keep the engine speed the same). The output of the alternator is connected directly to the load, without any processing.
With an inverter generator, the engine is connected to an efficient alternator, which produces AC electricity, just like a conventional generator. But then a rectifier is used to convert the AC power to DC and capacitors are used to smooth it out to a certain degree. The DC power is then “inverted” back into clean AC power of the desired frequency and voltage (e.g. in USA, 110-120VAC @ 60Hz). Regulation is very good and this system produces consistent power characteristics independent of the engine speed.
The result is much “cleaner” power (“pure sine waves”) than is possible with a conventional generator, essentially the same quality of electricity that you typically get from your electric company (Escom???). Why is this important? Well, more and more products today use some form of microprocessor.
Not just your computer, but also your phones, TVs, game consoles, printers, DVD players, and even kitchen appliances and power tools. And all these microprocessors are very sensitive to the quality of the electricity they use. Using power that isn't "clean" can make these devices malfunction, or even damage them.
So any application that uses sensitive electronics – and that includes a lot more things than you might think – will likely benefit substantially from the cleaner power provided by an inverter