Re: Re: Using a US Lisa in the UK -- redux!

Thank you very much, everyone! I am reassured about the idea of using a step-down transformer. I will buy one this week, and update you all once I've had a chance to try it out.

--Tom

On Saturday, December 12, 2015 at 8:46:46 PM UTC, alker wrote:
>
>
> I dont know if this has been answered (too much emails ;-) but I can
> confirm: it will work without issues. You can use a simple (€20) Step-Down
> converter and use your Lisa for hours. I have done this several years and
> never had an issue using an US PS on a step down converter.. just be sure
> to use at least 200 WATT and not the extremely cheap ones..
> *Gesendet:* Samstag, 12. Dezember 2015 um 01:23 Uhr
> *Von:* "Tom Stepleton" <step..._at_email.domain.hidden <javascript:>>
> *An:* LisaList <lisa..._at_email.domain.hidden <javascript:>>
> *Betreff:* Re: Using a US Lisa in the UK -- redux!
> Thanks for the thoughts everyone. Please rest assured that I have no
> intention of damaging my Lisas or myself :-)
>
> It would be great if a 240V to 120V stepdown transformer would do the
> job---and maybe it will! The one thing I'm worried about is the current
> frequency. The USA uses 60Hz, while UK wall current is at 50Hz.
>
> Stepdown transformers will change the voltage without trouble, but they
> can't change the frequency. Meanwhile, the data plate on the back of an
> American PSU is pretty specific:
>
> 120 VAC
> *60 Hz*
> 1.2 Amp
> 150 W
>
> It could be that the PSU can handle 50 Hz and they just didn't mark it
> that way---there aren't too many places where you'll find 1x0 VAC at 50 Hz
> (unless x == 0, and they didn't sell many Lisas in Tokyo...).
>
> So, has anyone tried running Lisas and ProFiles at 50 Hz on a 240V to 120V
> stepdown transformer? Is that something that should work at all?
>
>
> Other notes:
>
> The UPS idea is not a bad one, but when ordinary UPSes are plugged into a
> wall, I think they tend to emit the same line frequency as what comes in.
> Take this one
> <http://www.apc.com/shop/us/en/products/APC-Power-Saving-Back-UPS-Pro-1500/P-BR1500G>
> for example (see the Technical Specifications tab)---output frequency is
> "sync to mains". Worst case, I guess I could plug the UPS into the wall to
> charge it up, then unplug it and use the computer for a little bit, I guess.
>
> There are converters that can turn 240V 50Hz to 120V 60 Hz, but if you
> want something strong enough to power a Lisa/ProFile combo, I think you
> need to spend a whole lot of money---thousands.
>
> --Tom
>
>
> On Friday, December 11, 2015 at 11:14:29 PM UTC, rh jannini wrote:
>>
>> Tom -
>>
>> Here is an idea that might work - don't do anything to the Lisa - use a
>> UPS (US) and deal with the UK conversion at the outlet. You gain the
>> benefit of protecting the electronics and preserve the original PSU.
>>
>>>
>>
>>
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