Don Foreman wrote:

On Fri, 01 Feb 2008 19:16:30 -0600, "Pete C."
wrote:


cavalamb himself wrote:

William Noble wrote:

consider a 7805 regulator

this will give you nice stable 5VDC at up to 3 amps




The 78xx series are only up to one amp depending on packaging.
http://www.fairchildsemi.com/pf/LM/LM7805.html

Try LM350 adjustable regulator - Guaranteed 3 amps.
http://www.national.com/mpf/LM/LM350.html (with sechematic)

Richard

The 78xx are 3A in TO-3 packaging.


Not so. Current limit doesn't change with package.


Actually, it does.

The MAX on a 78xx is 1 amp. Smaller packages
are rated lower - down to the 78Lxx parts in TO-90 and SO8
packages(100 ma).

http://www.national.com/mpf/LM/LM78L05.html


The LM350 would be my choice.

Richard