Ancor LED bulb - SailNet Community
 5Likes
Reply
 
LinkBack Thread Tools
post #1 of 22 Old 09-23-2011 Thread Starter
Senior Member
 
Join Date: Apr 2007
Posts: 107
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 9
 
Ancor LED bulb

This bulb is a single contact bayonet basr with 12 leds. It is in a new fixture in the head. I seem to get about 30 to 50 hours of service from them before on led starts to blink then two ect. I have replaced it three times, warrenty,one shiped from Ancor. Any ideas?
fcsob is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 22 Old 09-23-2011
Learning the HARD way...
 
eherlihy's Avatar
 
Join Date: Jan 2007
Location: Boston / Ft Myers Area
Posts: 4,090
Thanks: 159
Thanked 110 Times in 107 Posts
Rep Power: 9
 
Bad contact, causing resistance and voltage drop. Could be in the fixture, or the wire to the fixture. Low voltage is compensated by an increase in current draw, and heat as a byproduct. Increase in heat, causes further voltage drop, and current draw. It's a vicious cycle until the heat cooks the magic smoke out of the LED.
eherlihy is offline  
Quote Quick Reply Share with Facebook
post #3 of 22 Old 09-23-2011
Don Radcliffe
 
Join Date: May 2007
Location: Santa Cruz
Posts: 396
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
Quote:
Originally Posted by eherlihy View Post
Bad contact, causing resistance and voltage drop. Could be in the fixture, or the wire to the fixture. Low voltage is compensated by an increase in current draw, and heat as a byproduct. Increase in heat, causes further voltage drop, and current draw. It's a vicious cycle until the heat cooks the magic smoke out of the LED.

Don't think so--study Ohm's law and try again.
donradclife is offline  
Quote Quick Reply Share with Facebook
post #4 of 22 Old 09-23-2011
Learning the HARD way...
 
eherlihy's Avatar
 
Join Date: Jan 2007
Location: Boston / Ft Myers Area
Posts: 4,090
Thanks: 159
Thanked 110 Times in 107 Posts
Rep Power: 9
 
Quote:
Originally Posted by donradclife View Post
Don't think so--study Ohm's law and try again.
Very constructive.... I am sure that the OP values your input.

You've earned yourself an addition to my ignore list...


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

USCG Licensed OUPV Captain, ASA 101/103/104/105/106/118 Instructor - Also certified in Marine Electrical Systems


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
eherlihy is offline  
Quote Quick Reply Share with Facebook
post #5 of 22 Old 09-23-2011
Senior Slacker
 
SlowButSteady's Avatar
 
Join Date: Feb 2010
Location: SoCal
Posts: 4,223
Thanks: 0
Thanked 17 Times in 15 Posts
Rep Power: 6
 
Touchy, touchy....

How about both of you expanding a bit as to WHY others are right or wrong before you snipe at one another? After-all, this ain't the OT or PRWG pages.

However, loss of the factory-installed smoke is pretty highly correlated with electronics failures.

Never forget them. Do something to prevent it from happening again.
Charlotte Bacon, Daniel Barden, Rachel Davino, Olivia Josephine Gay, Ana M. Marquez-Greene, Dylan Hockley, Dawn Hochsprung, Madeleine F. Hsu, Catherine V. Hubbard, Chase Kowalski, Jesse Lewis, James Mattioli , Grace McDonnell, Anne Marie Murphy, Emilie Parker, Jack Pinto, Noah Pozner, Caroline Previdi, Jessica Rekos, Avielle Richman, Lauren Rousseau, Mary Sherlach, Victoria Soto, Benjamin Wheeler, Allison N. Wyatt

Last edited by SlowButSteady; 09-23-2011 at 08:47 PM.
SlowButSteady is offline  
Quote Quick Reply Share with Facebook
post #6 of 22 Old 09-23-2011
Senior Member
 
Join Date: Feb 2008
Location: N. VA
Posts: 656
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 8
 
Send a message via Yahoo to dacap06
Quote:
Originally Posted by donradclife View Post
Don't think so--study Ohm's law and try again.
Don, not so helpful, that, and flat wrong to boot. While your advice applies quite nicely to the simple, standard incandescent light bulb, the LED light is a semiconductor device that resides on a circuit board with a voltage regulator.

Mr. Herlihy has it right - the circuit tries to maintain constant output of light. It compensates for low voltage with additional current to deleterious effect. For semiconductor devices, too much current is their worst enemy. The power absorbed (R*I**2) across the high-resistance junction generates more heat per second than it can dissipate per second, which melts the junction. Thus ends their useful life.

T. P. Donnelly
S/V Tranquility Base
1984 Islander 30 Bahama
Pasadena, MD
dacap06 is offline  
Quote Quick Reply Share with Facebook
post #7 of 22 Old 09-23-2011
Senior Member
 
Maine Sail's Avatar
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 5,890
Thanks: 20
Thanked 223 Times in 170 Posts
Rep Power: 16
       
Quote:
Originally Posted by fcsob View Post
This bulb is a single contact bayonet basr with 12 leds. It is in a new fixture in the head. I seem to get about 30 to 50 hours of service from them before on led starts to blink then two ect. I have replaced it three times, warrenty,one shiped from Ancor. Any ideas?
The LED's from Ancor are a very cheaply made product, likely made with very inexpensive ballast resistors and cheap orphaned emitters. Quality bulbs will use a DC/DC constant current regulator to feed the emitters what they need for a long life.

I highly doubt the Ancor bulbs have the circuitry or heat sinking to keep the emitters at a temp they like.

You might try a factory made LED nav light built for the purpose from the likes of Hella, Aqua Signal or others..
dacap06 likes this.

______
-Maine Sail / CS-36T


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




Images In Posts Property of Compass Marine Inc.


Maine Sail is offline  
Quote Quick Reply Share with Facebook
post #8 of 22 Old 09-23-2011
Senior Member
 
bljones's Avatar
 
Join Date: Oct 2008
Location: South Coast Ontario
Posts: 8,480
Thanks: 35
Thanked 91 Times in 81 Posts
Rep Power: 8
   
Quote:
Originally Posted by dacap06 View Post
Don, not so helpful, that, and flat wrong to boot. While your advice applies quite nicely to the simple, standard incandescent light bulb, the LED light is a semiconductor device that resides on a circuit board with a voltage regulator.

Mr. Herlihy has it right - the circuit tries to maintain constant output of light. It compensates for low voltage with additional current to deleterious effect. For semiconductor devices, too much current is their worst enemy. The power absorbed (R*I**2) across the high-resistance junction generates more heat per second than it can dissipate per second, which melts the junction. Thus ends their useful life.
Yeah, so there!

It's 5 o'clock somewhere:


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
bljones is offline  
Quote Quick Reply Share with Facebook
post #9 of 22 Old 09-24-2011
Senior Member
 
Join Date: Feb 2008
Location: N. VA
Posts: 656
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 8
 
Send a message via Yahoo to dacap06
Quote:
Originally Posted by Maine Sail View Post
I highly doubt the Ancor bulbs have the circuitry or heat sinking to keep the emitters at a temp they like.
Egads! Thanks for that info, Maine! I don't have personal experience with Ancor and didn't realize the company didn't do a proper job of designing support circuitry.

Ugh. How do people like that stay in business? As soon as clientele catch on their sales should plummet.

Tom

T. P. Donnelly
S/V Tranquility Base
1984 Islander 30 Bahama
Pasadena, MD
dacap06 is offline  
Quote Quick Reply Share with Facebook
post #10 of 22 Old 09-24-2011
Senior Member
 
Join Date: Mar 2005
Posts: 713
Thanks: 3
Thanked 2 Times in 2 Posts
Rep Power: 11
 
Quote:
Originally Posted by dacap06 View Post
Don, not so helpful, that, and flat wrong to boot. While your advice applies quite nicely to the simple, standard incandescent light bulb, the LED light is a semiconductor device that resides on a circuit board with a voltage regulator.

Mr. Herlihy has it right - the circuit tries to maintain constant output of light. It compensates for low voltage with additional current to deleterious effect. For semiconductor devices, too much current is their worst enemy. The power absorbed (R*I**2) across the high-resistance junction generates more heat per second than it can dissipate per second, which melts the junction. Thus ends their useful life.
]boy, that's a lot of big words. I'm not sure I understand completely, but I think you're saying the magic smoke got out? could't you just use the Internet tubes to pump more in?
dacap06 likes this.

Last edited by xymotic; 09-24-2011 at 09:43 AM.
xymotic is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Ancor Terminals: the must haves geary126 Gear & Maintenance 26 04-14-2012 08:22 PM
Ancor vs. 3M heat shrink adhesive connectors? turfguy Gear & Maintenance 39 05-04-2010 07:20 PM
bulb bow skomani Boat Review and Purchase Forum 2 10-01-2009 06:51 AM
Ancor wire tracker Grigrigrigoris Gear & Maintenance 6 04-05-2009 07:18 AM
Buying an ancor from a neighbor... MedSailor Gear & Maintenance 2 06-13-2008 09:20 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome