Re: Autoranging rectifier


"omurte" <omurtezaoglu@xxxxxxxxx> wrote in message
news:1138582283.208186.117430@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> I am looking for an autoranging front-end circuit to convert a
> universal AC input ( 90-265VAC ) to an unregulated DC voltage ( in the
> range of 220-400VDC ) to power some DC supplies at 90 Watts.
>
> It seems that such a front-end should operate as a doubler/rectifier in
> the lower AC input voltage ranges and as a simple rectifier in the
> higher AC input ranges.
>
> I have not found anything like this on the market except for Vicor's
> FARM which is 1000 Watts and overkill ( both power and pricewise ).
>
> Any ideas will be appreciated.

That input voltage spec looks like combination of US 110V and European 240V
50Hz +/- tollerances? Is that what you want...A power supply that works in
the USA and Europe? Take a look at the way ATX power supplies do their input
stage. Follow it with a DC-DC converter.







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