Peter Todd wrote:

> Ahh, I should be more clear. By peak, I mean that the highest amount of
> current I can possibly get is 40A. This is achieved by turning all the
> coils of the motors on. This is not peak in the sense of a momentary,
> pulse, this is peak in terms of I can maintain a draw of that much
> current under odd conditions. Not really a good use of the term peak
> come to think of it.

Well, it /is/ peak, so that wasn't wrong. It's just that "peak" needs also
(at least) the spec of how long it lasts. 

>> I'd try to buy one. Other than that, you can go simple linear (with big
>> heat sinks), switched (which probably is not trivial for 40+ A), or linear
>> with several parallel supplies that get switched on or off as the current
>> requires. Or something else... :)
> 
> Probably the way to go. Another poster mentioned a switch-mode supply
> from jameco that looks like it'd work, and comes with an impressive list
> of things it does. Expensive though, I may just find a bigger, higher
> voltage, transformer and go back to my first diode bridge. I just gotta
> find a 8v, 50A transformer.

And do something about the inrush current.

Gerhard

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist