[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [N8VEM-S100:554] Best place to start building S100 computer?

On 12/20/2011 02:49 PM, W3DRK wrote:
> I'd like to start by collecting the basic "core" parts such as a power
> supply and motherboard and build up from there.
> Fortunatly I am friends with someone in the custom transformer field
> so getting a decent transformed sized just for this purpose should be
> pretty strait forward, and perhaps even less expensive then using 2 or
> 3 seperate SMPS units.  I already have heavy heatsink mounted
> rectifier diodes, filter caps, etc so that helps too.
> Thanks!
> Dieter Kedrowitsch - W3DRK

Hi Dieter,

I'd agree with the others regarding the use of a switching power supply.
I got a 7.5V @42A supply from eBay that has a little bit of voltage
adjustment, but I'm leaving it at 7.5V so the 7805s will run a little

I also got, from eBay, a couple of 12V @5A switchers  to run the +/- 16V
rails, they will adjust to about 14.5V which will be fine.

All together I don't think I spent more than about $80 on the power

PS. Sorry I've been slacking on the 68K work, guys, I've been just up to
my neck, it's getting closer to the front burner however.

Mike Sharkey