Try using a switch mode regulator. You can use a simple switcher from
National or look into Linear Technology. Linear Technology has a program
called switcher Cad that will help you design a switching power supply very
simply.


At 10:36 AM 9/22/98 -0700, you wrote:
>I need to regulate 24vdc down to 5vdc for a PIC project.
>I've been using LM317's in TO-220 packages but they seem to go into thermal
>runaway when I draw any current.
>Does anyone have any good methods/schematics for this.
>
>Thanks in advance,
>
>-Ryan
>__________________________________________
>Ryan Bloom  ryanb@mpl.net
>     Meridian Partners Limited
>     Internet Systems Group, Director
>     425.688.9211  1.800.MPARTNER
>     http://www.mpl.net
>     "Your LINE On The World"
>
>
Larry G. Nelson Sr.
mailto:L.Nelson@ieee.org
http://www.ultranet.com/~nr