Date   : Mon, 01 Jul 2002 19:04:53 +0100
From   : "Chris Thornley" <C.J.Thornley@...>
Subject: Re: Battery BBC

Hi,
       If you are drawing power from say the CAR cigarette lighter
coils I would serious consider heavy regulation / smoothing as the
signal can be pretty nasty when the car and electrics i.e. alternator
are running. Also surge protection because you cannot be 100% sure of
12v you might have 13.5 or 24.

Chris

               />      Christopher J. Thornley is
cjt@...
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-----Original Message-----
From: owner-bbc-micro@... [mailto:owner-bbc-micro@...]
On Behalf Of Mike Mallett
Sent: 01 July 2002 22:30
To: bbc-micro@...
Subject: FW: [BBC-Micro] Battery BBC


I'm sure there was an article on this in the 'Bodybuilding' series in
Micro User many years ago.

I wonder if these can be found online ??




> -----Original Message-----
> From: owner-bbc-micro@...
[mailto:owner-bbc-micro@...] On
> Behalf Of cmj@...
> Sent: 18 June 2002 14:38
> To: bbc-micro@...
> Subject: Re: [BBC-Micro] Battery BBC
> 
> > I'd be interested in hearing if anyone has tried running a BBC or
Master
> > from a external power source like a sealed lead acid battery (e.g. a
car
> > battery). The particular application I'm considering would do away
with the
> > Beeb's power supply (so no DC-AC inverters). Hence I need +5V, 0V
and -5V
> > (at whatever the current ratings are without looking them up).
>