yes tried that before, but since the output and input
are all 120VAC, you have to use 2 transformer at once.
one is is step down 220VAC - 120VAC and another for
120VAC - 220 VAC.

--- Immar Puun <[EMAIL PROTECTED]> wrote:
> At 02:08 05.01.03 -0800, you wrote:
> >hi LIST,
> >
> >My friend brought me a used APC BACK-UPS 600 from
> USA.
> >Upon openning the unit I found out that the two 6
> >volts battery are dead.
> >I connected it to my 12Volts/ 150A/H truck battery
> and
> >it works just fine but the output is 120 VAC.
> >Any idea where I can find the schematics for this
> UPS
> >so that I can convert it to 220VAC.
> >Web searching gives no result.
> >Thanks
> >
> >
> >
> >
> >=====
> >Ronnie B. Tabanao
> >Everything Electronics Services
> >#06 Juan Luna St.,La Castellana,Negros Occidental
> >6131 Philippines
> Hi Ronnie,
> this is simplest thing, find 120v ->220v
> transformer. Connect it to output 
> of the UPS. As this UPS was brought from USA. it may
> have 60 Hz output. 
> Anyway, 50Hz transformer works also. the power will
> be a little bit less.
> 
> Happy New Year from Estonia!
> 
> Immar
> .i.
> 
> -- 
> Author: Immar Puun
>   INET: [EMAIL PROTECTED]
> 
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=====
Ronnie B. Tabanao 
Everything Electronics Services 
#06 Juan Luna St.,La Castellana,Negros Occidental 
6131 Philippines

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Author: rhonn tabanao
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