RE: Morex external PSUs

["James Mitchelmore" <james@xxxxxxxxxxxxxxx>]

Thanks for that Dave,

When you say 'simple PWM controller', how simple is simple? If I just
wanted to tweak it down to 33% speed, as it sounds like it is
comfortable with that, how tricky would it be?

James

-----Original Message-----
From: Dave McLaughlin [mailto:dave@xxxxxxx]=20
Sent: 03 May 2004 21:51
To: ukha_d@xxxxxxx
Subject: Re: [ukha_d] Morex external PSUs

Hi James

The existing power supply is not too bad if you slow down the fan on the

PSU. Most of the noise I find comes from the hard drive itself.

I built a simple PWM controller with an external switch so that I could=20
have 33%, 66% and full speed settings. On the 33% it is very quite and=20
even after a few days running there is hardly any heat build up. The=20
system takes way less than the 150W rating of the supply.

Much cheaper than a new supply. Well it was for me as I already had the=20
microcontroller board lying around doing nothing. I know it may be=20
overkill, but it does work and cost me nothing other than time to put=20
together.

Hope this helps.

Regards
Dave...

James Mitchelmore wrote:

>Chaps,
>=20
>Having finally received my kiosk PC I=92m in a position to start
playing.
>Following on from the discussion a couple of months ago, has anyone had
>long term success with these PSUs regarding the heat aspect, as far as
>compactness and audibility go they seem to be the route to take, just
>don=92t want the thing catching fire on me though! I would only be
running
>the supplied HD, no CD etc.=20=20
>=20
>Also, anyone extended the VGA cable?  Have found a supplier for
>replacements up to 10 inches which I seem to remember being the
>recommended maximum.
>=20
>TIA
>=20
>James
>=20=20
>





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