Lpc2000

--- In lpc2000@yahoogroups.com, "g2100g" <g2100g@e...> wrote:
> --- In lpc2000@yahoogroups.com, "hodgejackiehank" 
> <hodgejackiehank@y...> wrote:
> > 
> > The Olimex stuff works fine, and well built, allthougth the V.regs
> > could do with a bit more heatsinking, I would reccomend using a
> > regulated supply @ about 7V.
> 
> Regarding the voltage regulators on the Olimex board, please see my 
> message #2737, as well as the messages from Tsvetan (of Olimex) 
> referenced there.  Are you able to shed any additional light on this 
> issue?

No, I have no latchup problems, or any particular problem with the
board per se. However there is a breadboard area on the card and
obviously it would be convinient if circuitry here could be supplied
from the 3v3 regulator. At the 9VAC max input and max ouptput of the
LM1117 this would be about 6.5W, way over what the regulator could
dissipate. My point was simply that with a bit more heatsink it would
be better.

BTW, removing J1 puts a 5V zener in series, but like I said, if you
are putting much stuff on the breadboard a regulated DC supply would
be more appropriate than an AC. Indeed I suppose one could argue that
if you do want to use the regulator to the max then use a regulated
'black box' rather than a simple transformer ;-)