PCM Diagnostics & Tuning HP Tuners | Holley | Diablo
Sponsored by:
Sponsored by:

5 VDC supply from PCM?

Thread Tools
 
Search this Thread
 
Old 12-22-2005, 12:19 PM
  #1  
TECH Enthusiast
Thread Starter
iTrader: (8)
 
SSpeedracer's Avatar
 
Join Date: Feb 2004
Location: In my garage
Posts: 579
Likes: 0
Received 0 Likes on 0 Posts

Default 5 VDC supply from PCM?

I'm in the process of adding several 5VDC pressure transducers (~10mA each) and would like to avoid adding a DC-DC converter if possible. Does anyone know if 5VDC is available from the PCM, and if so is it stable? thanks
Old 12-22-2005, 01:37 PM
  #2  
TECH Addict
 
technical's Avatar
 
Join Date: Mar 2004
Location: Fat Chance Hotel
Posts: 2,336
Likes: 0
Received 0 Likes on 0 Posts

Default

I'd avoid tapping power from the PCM - too critical. There should be 5VDC from other components. What about the radio?
Old 12-22-2005, 02:14 PM
  #3  
Moderator
iTrader: (11)
 
jimmyblue's Avatar
 
Join Date: Mar 2002
Location: East Central Florida
Posts: 12,605
Likes: 0
Received 6 Likes on 6 Posts

Default

There are several 5V reference outputs but I agree
you probably don't want to be adding load to them.

A LM7805K type linear regulator will give you an amp
with adequate heat sinking, dead simple, reasonably
good tolerances and pretty cheap.

http://www.digikey.com/scripts/DkSea...544918&Site=US

http://rocky.digikey.com/WebLib/Texa...0%20Series.pdf




All times are GMT -5. The time now is 02:27 PM.