LED light testing - Page 4 - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 04-11-2012, 05:31 PM   #43
Raz
Senior Member
 
Raz's Avatar
 
Name: Raz
Trailer: Trillium 2010
Vermont
Posts: 4,060
Quote:
Originally Posted by Rene View Post
Just had a nasty surprise with these LED panels. The foam tape on the back of the panels has reacted to the heat produced over several hours by shriveling up into a marshmallow like ball. Then the panel drops off the reflector and lays on the lense where it does a lousy job of providing illumination. Much better when fastened to the reflector. Has no one else had this happen? I have to figure out a better method of attachment. The panels do not get as hot as bulbs but it is still uncomfortable to the touch. Any ideas?
Well you made me look. Mine are held inplace with double stick tape aswell. I used the 3m stuff , foam with adhesive on both sides. So far so good. How hot are your lights getting? Raz
__________________

__________________
Raz is online now   Reply With Quote
Old 04-15-2012, 01:57 AM   #44
Senior Member
 
Name: Rene
Trailer: Bigfoot 2500 truck camper
British Columbia
Posts: 233
Not as hot as bulbs but still too hot to hold onto for long. Had two out of seven drop off so far. The tape on mine says 3M but they make alot of different tapes and I am not sure this stuff is authentic.
__________________

__________________
Rene is offline   Reply With Quote
Old 04-16-2012, 05:24 AM   #45
Raz
Senior Member
 
Raz's Avatar
 
Name: Raz
Trailer: Trillium 2010
Vermont
Posts: 4,060
Quote:
Originally Posted by Rene View Post
Not as hot as bulbs but still too hot to hold onto for long. Had two out of seven drop off so far. The tape on mine says 3M but they make alot of different tapes and I am not sure this stuff is authentic.
Unlike incandescent lights, LED's require additional components to work. The least expensive way to do it is with resistors. Unfortunately resistors turn electrical energy into heat. Of course the reason for using LED's over incandescents is efficiency, more light and less heat. Sounds like these are not as efficient as they could be. Still I am sure they are better than the incandescents they are replacing. Instead of tape perhaps a dab of adhesive (goop?) would work. The fixture could be taped with masking tape until it cures. Good luck, Raz
__________________
Raz is online now   Reply With Quote
Old 04-16-2012, 06:47 AM   #46
Senior Member
 
Thomas G.'s Avatar
 
Name: Kinga DeRode
Trailer: For Sale Or Rent
Rooms to Let 50 Cents
Posts: 5,103
I hate to say it, but silicon might make a good adhesive, as it is highly heat resistant.

Don't tell Donna.
__________________
UHaul and Burro owners, join the UHaul Campers on Facebook. https://www.facebook.com/groups/529276933859491/
Thomas G. is offline   Reply With Quote
Old 04-16-2012, 10:44 AM   #47
Raz
Senior Member
 
Raz's Avatar
 
Name: Raz
Trailer: Trillium 2010
Vermont
Posts: 4,060
Quote:
Originally Posted by Thomas G. View Post
I hate to say it, but silicon might make a good adhesive, as it is highly heat resistant.

Don't tell Donna.
I originally wrote silicone but it occurred to me that some silicones conduct and you don't want to short the printed circuit board. Raz
__________________
Raz is online now   Reply With Quote
Old 04-16-2012, 12:57 PM   #48
Senior Member
 
Thomas G.'s Avatar
 
Name: Kinga DeRode
Trailer: For Sale Or Rent
Rooms to Let 50 Cents
Posts: 5,103
Quote:
Originally Posted by P. Raz View Post
I originally wrote silicone but it occurred to me that some silicones conduct and you don't want to short the printed circuit board. Raz
I didn't know that. I've used silicon caulk to make my own waterproof 110 volt underground splice. After 20 years it hasn't tripped the GFCI.

I guess one could test a cured sample with a multimeter.
__________________
UHaul and Burro owners, join the UHaul Campers on Facebook. https://www.facebook.com/groups/529276933859491/
Thomas G. is offline   Reply With Quote
Old 04-16-2012, 05:44 PM   #49
Raz
Senior Member
 
Raz's Avatar
 
Name: Raz
Trailer: Trillium 2010
Vermont
Posts: 4,060
Quote:
Originally Posted by Thomas G. View Post
I didn't know that. I've used silicon caulk to make my own waterproof 110 volt underground splice. After 20 years it hasn't tripped the GFCI.

I guess one could test a cured sample with a multimeter.
I knew a guy who sealed some antenna connections with silicone. That particular product conducted. It shorted out the antenna. Took a while to figure it out. . It think it depends on the product. Raz
__________________
Raz is online now   Reply With Quote
Old 02-10-2013, 08:38 AM   #50
Senior Member
 
Name: Cathy
Trailer: 1973 Love Bug '13
Florida
Posts: 400
Registry
OK, silly question.. do I understand correctly that either resistors OR regulators not both? And are they installed at the fixture or at the source?
Cat futrell is offline   Reply With Quote
Old 02-10-2013, 08:48 AM   #51
Senior Member
 
Thomas G.'s Avatar
 
Name: Kinga DeRode
Trailer: For Sale Or Rent
Rooms to Let 50 Cents
Posts: 5,103
Quote:
Originally Posted by Cat futrell View Post
OK, silly question.. do I understand correctly that either resistors OR regulators not both? And are they installed at the fixture or at the source?
I assume you are talking about for LED lights. I used a voltage regulator so that when the battery is hit with 14.5 volts on a fast charge, the LEDs would still only get 12 volts, which keeps them from overheating.

I installed them at the fixture, though if you had a single circuit that only had LED lights on it you could regulate the circuit in the feed wire. The downside would be if you added something like a fan to the same circuit later, it might be too much current draw for the regulator.

Sometimes dropping resistors are used if, say, you want to run a 6 volt constant current draw device (like an incandescent light bulb) on 12 volts, but that is not a practical application for LED lights with a variable voltage input.
__________________
UHaul and Burro owners, join the UHaul Campers on Facebook. https://www.facebook.com/groups/529276933859491/
Thomas G. is offline   Reply With Quote
Old 02-10-2013, 09:11 AM   #52
Senior Member
 
Name: Cathy
Trailer: 1973 Love Bug '13
Florida
Posts: 400
Registry
Thanks for your reply Tom,

Yes talking about LEDs. As much as I have read and studied this whole electrical thing still seems to elude my full comprehension. To clarify - Is it necessary to use both regulators and resistors or are they one in the same? Or are regulators alone enough?

Do I understand that it is possible for 12v fixtures to share power supply with one another?

Have purchased 45 amp power converter with built in charger wizard. Have not yet purchased a DC distribution Panel. The plan is to be completely 12 volt with LED. With the possible of a fridge if we decide that we want one later.

Also, Have I hijacked this thread and if so how do I move this post elsewhere?
Cat futrell is offline   Reply With Quote
Old 02-10-2013, 09:18 AM   #53
Senior Member
 
Name: Cathy
Trailer: 1973 Love Bug '13
Florida
Posts: 400
Registry
Thank you Spanke for sharing your research. This thread has helped me to gain understanding (and that ain't easy to do)
Cat futrell is offline   Reply With Quote
Old 02-10-2013, 09:36 AM   #54
Senior Member
 
Thomas G.'s Avatar
 
Name: Kinga DeRode
Trailer: For Sale Or Rent
Rooms to Let 50 Cents
Posts: 5,103
Quote:
Originally Posted by Cat futrell View Post
Thanks for your reply Tom,

Yes talking about LEDs. As much as I have read and studied this whole electrical thing still seems to elude my full comprehension. To clarify - Is it necessary to use both regulators and resistors or are they one in the same? Or are regulators alone enough?
Short answer, they are different and only a regulator is desirable. Some here don't even use a regulator and just take the risk of overheating the LEDs.

Quote:
Do I understand that it is possible for 12v fixtures to share power supply with one another?
Not sure exactly what you mean by sharing power supply, but they can be wired in parallel so two light fixtures could be run off a single circuit (feed wire from the fuse)

Quote:
Have purchased 45 amp power converter with built in charger wizard. Have not yet purchased a DC distribution Panel. The plan is to be completely 12 volt with LED. With the possible of a fridge if we decide that we want one later.
You can run a compressor type refrigerator off a 12 volt battery, but not an absorptive type, which usually also runs on LP gas. If you have a 3 way refrigerator, it is better to run it off 110 volts than 12 volts through the converter because the 110 volt heating element is more powerful.

Quote:
Also, Have I hijacked this thread and if so how do I move this post elsewhere?
Ask a moderator to move it if you want.
__________________
UHaul and Burro owners, join the UHaul Campers on Facebook. https://www.facebook.com/groups/529276933859491/
Thomas G. is offline   Reply With Quote
Old 02-10-2013, 10:12 AM   #55
Senior Member
 
Name: Cathy
Trailer: 1973 Love Bug '13
Florida
Posts: 400
Registry
Thanks Tom,

Patient and helpful as always.
__________________

Cat futrell is offline   Reply With Quote
Reply

Tags
light


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

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
LED PUCK LIGHT Barbara Gardin Electrical | Charging, Systems, Solar and Generators 9 07-01-2010 10:41 AM
Yet 'another' led light find Doug Mager Modifications, Alterations and Updates 8 03-11-2010 11:09 PM
New LED Light Lisa H. Care and Feeding of Molded Fiberglass Trailers 7 02-25-2009 11:49 PM
Has anyone seen this LED light? Roy in TO General Chat 6 11-16-2008 08:07 PM
My NEW LED LIGHT install.. Doug Mager Modifications, Alterations and Updates 19 03-27-2007 09:39 PM

» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:31 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.