I knew I had seen this last year, just found it again. On the petscii forum, a post from 'jsally' says: > Heavy duty C64 power supply instructions > « Thread Started on Nov 10, 2008, 10:46am » [Quote] > Hi guys, here are instructions on how to make a step-down switcher based power supply for e.g. C64 use. Maximum current is 5A @ 5V which is enough for power hungry expansion devices too! There is a separate transformer for providing 9VAC. > > The same board can be used as a generic step-down switcher for all applications, and there are multiple devices with different voltages in the switcher IC family. > > http://www.cbm8bit.com/jsaily/ And on that page there is a nice page with the design details and photos of one nice-looking supply he built. Well, at least there was before. At the moment the site seems to be down. I hope that is temporary. Justin wrote: > Alas Mr. Coyote, if only it were so easy. The hits on that are far from > a direct line to a workable solution. A writeup from 1990 and debates > from 2004 on replacement PS design... and then there is the PDF writeup > where the built in power switch can no longer kill the 9VAC input... > > Ugly. > > Call me lazy, and aptly so, but I'd rather either order an Acme C64 > replacement PS, or see a circuit diagram someone else has already built > and is happy with for the right reasons (clean, switched, fail safe). > > Justin > > On Sep 21, 2009, at 6:41 PM, Wile E. Coyote wrote: > >> >> Justin wrote: >> >>> I'm wondering if anyone knows a good board layout or writeup on doing >>> a replacement power supply Message was sent through the cbm-hackers mailing listReceived on 2009-09-22 06:00:05
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