logo
Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error
Electrical noise interference solutions
Options View
Previous Topic Next Topic
MBHladilek
#1 Posted : Monday, June 22, 2009 5:09:56 AM(UTC)
MBHladilek

Rank: Dedicated Tin Star

Groups: Member
Joined: 1/9/2008(UTC)
Posts: 53
Points: 77
My port engine is generating electrical noise interference in my sonar display screen. I suspect it is from the alternator. I have found two types of filtering: 1) In-line between battery and electronic equipment and 2) In-line between alternator and battery.
Has anyone tried either type of filtering and did it work? I'm thinking I may use both types to cover all the bases.
Back to top
 |  Edit by user
Sponsor
Please Register : To weed out spammers, new members may not post until approved. An email is usually sent after approval. This forum is for Marinette Owners and other aluminum boat boaters who wish to share boating information. Aluminum Roamer owners are also welcome. (Do not post content you do not have the right to post and mass (robots) posters are unwelcome. We also have a marine electronics page and lots of Chrysler Engine info. State by what permission you copy content and give credit properly.) The site is now fixed with some more Chrysler information. We have space for pictures on the new location. Use shinkpic to autochange size http://www.onthegosoft.com/sp_download.htm

Great Sites - http://www.marinette.com Marinette Company

http://web.me.com/dougmrose/Doug_Roses_Website/Welcome.html

http://fastjeff.tripod.com/ Repair Tricks and Techniques for Marinettes

http://www.greatlakesmarinetteclub.com/

PLEASE post in the appropriate folder. Please, do not post your actual email address in publicly readable websites. The first rule is be a class act.
Back to top  
Ed
#2 Posted : Monday, June 22, 2009 12:38:44 PM(UTC)
Rank: Top Rank Aluminum Star

Groups: Member
Joined: 3/5/2008(UTC)
Posts: 208
Points: -522

Thanks: 1 times
Was thanked: 4 time(s) in 4 post(s)
First I would replace the brushes on that alternator. They're arcing and sparking and making the noise. And will need to be replaced soon anyway. Then the capitor (condensor) from the output to the case of the alternator may be all you need.
Unless you have a bad diode in the output, then you will always have some A.C. in the D.C. output , The brushes will make alot more noise though.---Ed
BUSIA
32 foot, no flybridge, twin 350 (chevy) Crusaders, closed (freshwater) cooling, 1:1 Velvet drive transmissions.
Proud to be IBEW.
Back to top
dougrose
#3 Posted : Tuesday, June 23, 2009 2:38:25 AM(UTC)
dougrose

Rank: Marinette Royal Aluminum Poster (300+) posts

Groups: Member, Administration, Admin
Joined: 12/7/2007(UTC)
Posts: 1,332
Points: 1,746

Was thanked: 25 time(s) in 21 post(s)
Generally speaking, it is best to put the noise suppression device as close to the noise as possible. I have always put filters on the outputs of alternators, once the noise is loose it is a plague. I have also had problems with fluorescent lamps using electronic ballast, and have converted to LEDs.


1975 32' Flybridge Sedan, twin Perkins 6-354 diesels, 1:1.53 velvetdrives, 16 X 19 props. Merritt Island, Florida
Back to top
Users browsing this topic
guest
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Powered by YAF 1.9.5.5 | YAF © 2003-2011, Yet Another Forum.NET
This page was generated in 0.326 seconds.