Jump to content

Nominations for Tractor of the Month
Garden Tractors and Parts on eBay



Photo
- - - - -

The New Shop


  • Please log in to reply
577 replies to this topic

#571 larrybl ONLINE  

larrybl

    Texas Member

  • Site Supporter
  • -GTt Supporter-
  • Contributor
  • Member No: 415
  • 4,939 Thanks
  • 3,320 posts
  • Location: Central Texas

Posted October 31, 2015 - 07:06 PM

The LEDS are arranged in 10 rows of three each for a total od 30 leds per lamp. I bought a 12V and 6V 2.9ah batteries and wired them in series to give me 18V. Interesting that there is no voltage drop, still at 18V and pulling 1A.

 

I am working on a charging circuit using a LM317t regulator to charge the batteries now.

Attached Thumbnails

  • P1140503.JPG

Edited by larrybl, October 31, 2015 - 07:08 PM.


#572 FixItCharlie OFFLINE  

FixItCharlie
  • Senior Member
  • Member No: 47950
  • 355 Thanks
  • 256 posts
  • Location: Aurora,IL

Posted November 01, 2015 - 11:51 AM

We use a lot of LEDs for signals on the railroad & line loss can be a killer for LEDs. I would say to increase your wire gauge to at least 14 gauge. Over time if the voltage is not at the proper range the LEDs will start to flicker. The signal LEDs we use are designed to operate at 12 to 13 volts  any voltage different then that the life of the LED is shortened.

 

Charlie


  • larrybl and HDWildBill have said thanks

#573 larrybl ONLINE  

larrybl

    Texas Member

  • Site Supporter
  • -GTt Supporter-
  • Contributor
  • Member No: 415
  • 4,939 Thanks
  • 3,320 posts
  • Location: Central Texas

Posted November 01, 2015 - 12:09 PM

I will try heavier wire to see if I can run them off a GT battery. The flicker is from running them off an switching inverter, I am running mine directly from battery, they are running cool, and just dim as the voltage drops off.



#574 FixItCharlie OFFLINE  

FixItCharlie
  • Senior Member
  • Member No: 47950
  • 355 Thanks
  • 256 posts
  • Location: Aurora,IL

Posted November 01, 2015 - 01:07 PM

The flicker is with them run on battery railroad signal always have lots of batteries. The flicker comes from the junctions breaking down in the LED. In a signal LED some are connected  with series strings & parallel strings & when the junctions in these strings start breaking down it will cause them to flash. This flash / flicker rate is a lot quicker then what is used in a standard flash rate so train crews are always calling us out for this problem.

 

Charlie



#575 larrybl ONLINE  

larrybl

    Texas Member

  • Site Supporter
  • -GTt Supporter-
  • Contributor
  • Member No: 415
  • 4,939 Thanks
  • 3,320 posts
  • Location: Central Texas

Posted November 01, 2015 - 01:23 PM

I ran mine for 1:15 until the voltage dropped to 15.5v and the amps down to .1. No flicker. 

I tried thicker wire, direct to the GT battery. no-go so anything I do will be at 18v.

 

 

Attached Thumbnails

  • P1140520.JPG
  • P1140534.JPG
  • P1140535.JPG
  • P1140536.JPG
  • P1140537.JPG
  • P1140538.JPG
  • P1140539.JPG


#576 larrybl ONLINE  

larrybl

    Texas Member

  • Site Supporter
  • -GTt Supporter-
  • Contributor
  • Member No: 415
  • 4,939 Thanks
  • 3,320 posts
  • Location: Central Texas

Posted November 01, 2015 - 03:20 PM

OK, think this will work, I'll take the batteries back tomorrow for a $40.00 refund, and order one of these.

http://www.amazon.co... laptop charger



#577 larrybl ONLINE  

larrybl

    Texas Member

  • Site Supporter
  • -GTt Supporter-
  • Contributor
  • Member No: 415
  • 4,939 Thanks
  • 3,320 posts
  • Location: Central Texas

Posted January 09, 2016 - 11:29 PM

We are trying a camp out tonight. Supposed to drop in the 20's here tonight. So far so good, movie time is going good, and it is at 70* in here now.

Attached Thumbnails

  • P1140851.JPG
  • P1140852.JPG
  • P1140853.JPG
  • P1140854.JPG
  • P1140855.JPG
  • P1140856.JPG

  • Alc said thank you

#578 KennyP ONLINE  

KennyP

    FORDoholic

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2253
  • 28,346 Thanks
  • 39,627 posts
  • Location: Collinsville, Oklahoma

Posted January 10, 2016 - 05:43 AM

The kitty looks comfy!


  • larrybl and HDWildBill have said thanks




Top