Date   : Thu, 01 Mar 2001 09:53:50 +0000
From   : Tim Fardell <timf@...>
Subject: Re: US Power Supply

You should be OK with an RGB monitor, provided it doesn't mind the 50Hz
frame rate, but US TVs or video monitors will give a monochrome picture
(the video output on an unmodified BBC is mono anyway). I don't think
the modulated RF output can be used with US TVs due to frequency
differences??? 

Chris Thornley wrote:
> 
> Hi,
> You might be better going to maplin electronics and pickup a transformer
> converter. The have numerous ones off different wattage designed to either
> convert UK 240volts down converted to American 110volts or American 110volts
> Up converted to UK 240volts. But you real concern is the TV system in
> America it NTSC 525 lines at 60hz with a 3.58Mhz colour carrier and in the
> UK it PAL 625 line 50Hz with a 4.43MHz colour carrier. So unless you are
> taking a British RGB Monitor you'll have to investigate other methods of
> display.
> 
> Normal PCs should be ok as they have an orange voltage change over switch
> located near the back off the power supply.
> 
> Chris
> 
> -----Original Message-----
> From: owner-bbc-micro@... [mailto:owner-bbc-micro@...]
> Sent: 28 February 2001 05:51
> To: bbc-micro@...
> Subject: [BBC-Micro] US Power Supply
> 
> I'm in the US and want to replace the UK 220-240 power supply on a Master
> 128 and a BBC B with a US 115V.  Does anyone know of a direct replacement?
> Wasn't there someone on this list who just did the the reverse a couple of
> months ago with some Acorn systems from the US?
> 
> Thanks in advance
> Adrian
> 
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