Bench Testing DC 12 volt - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 09-30-2008
landlockvasailor's Avatar
Senior Member
 
Join Date: Aug 2007
Location: Virginia
Posts: 132
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
landlockvasailor is on a distinguished road
Bench Testing DC 12 volt

I need to bench test equipment and my old power supply is toast. The one that I am looking at is a 13.8 VDC with 4 - 6 Amps. I cannot recall whether most 12 volt DC systems would be safe. Any thoughts?
__________________
When I go, let it be by boat, with a steady breeze on the Chesapeake with a bottle of 7-up, a bag of ice, a plastic cup, and a box of wine
Reply With Quote Share with Facebook
  #2  
Old 09-30-2008
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 9 Times in 9 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
Yes, that should be fine... Bulk charging current for most 12 VDC systems is 14.4 VDC or so.
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Share with Facebook
  #3  
Old 09-30-2008
Classic30's Avatar
Once known as Hartley18
 
Join Date: Aug 2007
Location: Melbourne, Australia
Posts: 4,439
Thanks: 25
Thanked 35 Times in 35 Posts
Rep Power: 8
Classic30 will become famous soon enough Classic30 will become famous soon enough
Quote:
Originally Posted by landlockvasailor View Post
I need to bench test equipment and my old power supply is toast. The one that I am looking at is a 13.8 VDC with 4 - 6 Amps. I cannot recall whether most 12 volt DC systems would be safe. Any thoughts?
Any reason you wouldn't use an old battery with an in-line fuse attached?

I've got a small motorbike battery on my bench for just that purpose..

Cameron
__________________
-
"Honestly, I don't know why seamen persist in getting wrecked in some of the outlandish places they do, when they can do it in a nice place like Fiji." -- John Caldwell, "Desperate Voyage"
Reply With Quote Share with Facebook
  #4  
Old 10-01-2008
EO32's Avatar
Senior Member
 
Join Date: Jan 2008
Location: Fremont, WA
Posts: 165
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
EO32 is on a distinguished road
I use a car battery charger when working with 12 volt equipment. I figure most 12 vdc items can take a range of inputs, since your battery bank voltage varies when in use.
__________________
If a man must be obsessed by something, I suppose a boat is as good as anything, perhaps better than most. A small sailing craft is not only beautiful, it is seductive and full of strange promise and the hint of trouble.

- E.B. White
Reply With Quote Share with Facebook
  #5  
Old 10-01-2008
Classic30's Avatar
Once known as Hartley18
 
Join Date: Aug 2007
Location: Melbourne, Australia
Posts: 4,439
Thanks: 25
Thanked 35 Times in 35 Posts
Rep Power: 8
Classic30 will become famous soon enough Classic30 will become famous soon enough
Quote:
Originally Posted by EO32 View Post
I use a car battery charger when working with 12 volt equipment. I figure most 12 vdc items can take a range of inputs, since your battery bank voltage varies when in use.
I used to use a car battery charger - a nice 10A one too - until I blew up the regulator one day..

Unfortunately, battery chargers are not power supplies and are not designed to work very well (or very long) on high-resistance loads. If that's all you've got, I'd strongly suggest hooking an old battery up in parallel with the output... or suffer the consequences.

Cameron
__________________
-
"Honestly, I don't know why seamen persist in getting wrecked in some of the outlandish places they do, when they can do it in a nice place like Fiji." -- John Caldwell, "Desperate Voyage"
Reply With Quote Share with Facebook
  #6  
Old 10-01-2008
Senior Member
 
Join Date: Jul 2008
Posts: 239
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
LittleWingCA is on a distinguished road
An adjustable power supply that you can vary output voltage and set current limits is ideal since you can adjust the output voltage to simulate batteries that are getting weak. Adjustable current limits are nice too if you are testing equipment with different needs, and want to add some level of short protection, or ensure power ratings aren't exceeded.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

LittleWingCA
1980 Pacific Seacraft Orion 27
Sailing Grounds: Southern California
Reply With Quote Share with Facebook
  #7  
Old 10-01-2008
landlockvasailor's Avatar
Senior Member
 
Join Date: Aug 2007
Location: Virginia
Posts: 132
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
landlockvasailor is on a distinguished road
Thanks for all the information, it is appreciated
__________________
When I go, let it be by boat, with a steady breeze on the Chesapeake with a bottle of 7-up, a bag of ice, a plastic cup, and a box of wine
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
6 Volt Battery Sailpilot Gear & Maintenance 19 03-18-2008 07:30 PM
6 volt golf cart batteries hollyp Gear & Maintenance 6 12-02-2007 05:38 PM
Hilarious Pract. Sailor Article testing waterline stain removers labatt Gear & Maintenance 17 11-03-2007 10:06 PM
12 volt to 24 volt conversion SMIK12 Gear & Maintenance 1 04-18-2005 01:50 PM
6 Volt Batteries vs 12 Volt ABullard Gear & Maintenance 10 09-06-2001 05:41 PM


All times are GMT -4. The time now is 09:18 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.