All times are UTC + 10 hours [ DST ]




Post new topic Reply to topic  [ 526 posts ]  Go to page Previous  1 ... 32, 33, 34, 35, 36
Author Message
 Post subject: Re: Alternator upgrades
PostPosted: Fri Mar 31, 2017 10:59 pm 
Offline
Weekend Cruiser

Joined: Thu May 24, 2012 6:47 pm
Posts: 56
Location: Gold Coast
bumpstart wrote:
at the cost of a few cents . would you not change the diode anyway?
i usually run three 3A as a gang ( yes i know they dont shed evenly as they warm ) so i have a proxy 9A

only time ive seen it go bad, and they tested ok to me on DMM
but still one must have leaked was the relay would buzz when the light was activated until the alternator kicked in


Thanks Bump
Yeah running 2 axial 6amp diodes in parallel, very strange never seen a diode reverse bias and read correct on my DMM in the 20 odd years of doing electronic (switchmode PSU's repairs)...Learn something new everyday :D

Ok will buy a few more and see if that fixes the issue.

Appreciate your help mate!

Cheers
Rob

Edit:
Ok today I replaced the diodes and still wouldn't switch off with key :(

Thought to test back feed on the ignition wire I soldered in a diode as in pic below, and it functioned as normal and turned off with key.

That would suggest the internal regulator does indeed have a inbuilt diode to prevent back feed to ign wire. So time to have the alt rebuilt :)


Attachments:
wiring.jpg
wiring.jpg [ 56.97 KiB | Viewed 655 times ]
Top
 Profile E-mail  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 526 posts ]  Go to page Previous  1 ... 32, 33, 34, 35, 36

All times are UTC + 10 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group