RISC PC Powersupply for a car - comp.sys.acorn.hardware

Message from discussion RISC PC Powersupply for a car

Jules

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More options 22 Feb 2007, 16:08

Newsgroups: comp.sys.acorn.hardware

From: Jules <julesrichardso...@remove.this.yahoo.co.uk>

Date: Thu, 22 Feb 2007 10:08:48 -0600

Local: Thurs 22 Feb 2007 16:08

Subject: Re: RISC PC Powersupply for a car

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On Thu, 22 Feb 2007 12:01:45 +0000, Michael Emerton wrote:
> I have started writing a piece of software with a decent GUI for use
> with an LCD which sits in place of the usual Head unit (I have a remote
> Keyboard and mouse to use with this).

Obvious question, but how do you intend to make the device usable (and
safe) at road speeds? Or is the intention to only control it whilst
stopped? Having to use a full keyboard whilst driving sounds like a good
way of ending up dead :(

Seems to be one of those problems with having lots of music instantly on
tap within a car: controlling four or five CDs with ten or so tracks each
is do-able without taking too much concentration away from the driver (as
they can remember CD order and which track is where) - but it really
doesn't scale to thousands on songs.

> but I need the a PSU for a 12 DC Source?

Initially a mains inverter may be an option, depending on how much power
you need. I know Wal-Mart in the US do (or did) a 75W one for something
like the equivalent of £10. Tesco etc. may offer something similar.
Perhaps easier than trying to get regulated 12VDC out of something that
might be anywhere between 11-14VDC and prone to all sorts of spikes.

cheers

Jules

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