[Coco] CoCo 3 Voltage Regulator heat sink

[Mike Pepe]

John, they aren't hard to find. Jameco, Ebay, Newegg, etc... or scrounge
them out of old PCs. They were usually found on 386/486 heatsinks.

As for where to mount it, I've had good success mounting it just to the
left of the heatsink so it blows directly over it. RTV silicone or
double-sided tape mounts it just fine, and yes it doesn't interfere with
the keyboard.

It runs on 12V which I get directly off the fat rectifier diodes. This
voltage is unregulated so you get an audio indicator of how busy the
CoCo is. The slower the fan, the busier the machine is.



> -----Original Message-----
> From: coco-bounces at maltedmedia.com [mailto:coco-
> bounces at maltedmedia.com] On Behalf Of John T Chasteen
> Sent: Sunday, April 12, 2009 2:01 PM
> To: coco at maltedmedia.com
> Cc: coco at maltedmedia.com
> Subject: Re: [Coco] CoCo 3 Voltage Regulator heat sink
> 
> Where can I get a 40mm fan? What voltage does it require?
> Does the fan go inside the coco3 case?
> 
> John
> 
> On Thu, 9 Apr 2009 14:44:11 -0700 "Mike Pepe" <lamune at doki-doki.net>
> writes:
> > While both of those options may reduce power consumption to some
> > degree, my real world experience suggests the best way to deal with
> > the CoCo 3 heat problem is to stick a 40mm fan near the PSU area.
> > I've had a 512k/6809 CoCo running that way for years and years
> > without issue. (Except maybe a little noise.)
> >
> > If you're going to mess around with the PSU, I'd just (and have)
> > take the Gene approach and just rip out the PSU entirely and run the
> > thing off an external unit. I recycled an external switcher from an
> > old dead Telebit router and used it for a CoCo 3/Disto 2MB repack.
> >
> > -----Original Message-----
> > From: coco-bounces at maltedmedia.com
> > [mailto:coco-bounces at maltedmedia.com] On Behalf Of Stephen Adolph
> >
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