View Single Post
Old 08-28-2008, 08:41 AM   #24 (permalink)
EcoModding Lurker
Join Date: Apr 2008
Location: rockaway, NJ
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
7805 Automotive Replacement

Tell you what, Sourcing a 30 volt zener isn't terribly bad, it adds a component, but I cannot believe that there isn't a common 5 volt voltage regulator in existence designed for automotive use. Can somebody mouse around and see if the 7805 should be obsolete for automotive use and replaced with something better?[/QUOTE]

The LM2940.. was designed by National Semiconductor for auto applications with attendent power interruptions and spiking and is available with a 5v output. I'm not sure which temp. spec you're interested in, but in general the T0-220 variety runs just under $2 from DIGI-KEY.

I've watched the development of this project and am ipressed with the progress. Keep up the good work!

G. Taylor
Honda PC800 50mpg
  Reply With Quote