Author Topic: Photocell  (Read 348 times)

0 Members and 1 Guest are viewing this topic.

Offline DannnyGTopic starter

  • Newbie
  • Posts: 8
  • Country: us
Photocell
« on: May 30, 2024, 01:42:01 pm »
I got a 30 foot flagpole with 16' of led lights that will light up perfectly when I attach then to the fully charged 12 v battery.  I  bought a 10-50v photocell and tested it on my power supply using a small led strip and short wire.  When I get out to the flag pole everything is connected properly and the photo cell clicks but doesn't work.  The only difference I can see is the 30' of wire and using the power supply instead of the battery at the pole.  I suspect the cheap photo cell but even if it is that please tell enlighten me on what the problem might be. I'm attaching the specs on the cell.
 

Offline Terry Bites

  • Super Contributor
  • ***
  • Posts: 2469
  • Country: gb
  • Recovering Electrical Engineer
Re: Photocell
« Reply #1 on: May 30, 2024, 02:50:16 pm »
The word Tungsten is the clue.
Its not designed to work with LEDS but old school tungsten lamps.
Try adding a small (same voltage) tungsten across the LEDS.
 

Offline DannnyGTopic starter

  • Newbie
  • Posts: 8
  • Country: us
Re: Photocell
« Reply #2 on: May 30, 2024, 03:03:36 pm »
Newbie here Terry.  I get the fact that the cell isn't for leds but don't know how to add a small tungsten across leds means?
 

Offline jzx

  • Regular Contributor
  • *
  • Posts: 57
  • Country: es
Re: Photocell
« Reply #3 on: May 30, 2024, 05:14:27 pm »
You can connect in parallel with the leds. But I think that the label means "10A if you use tungsten lamps - 4.2A if you use E (lectronic?) ballast (fluorescent tubes?)". The first comma is a bit strange.
If you can hear a click, the output switch must be a relay, that have no many problem with the type of load. A too long wire will give you more resistance and a dimmer light, but no an absolute fail.
Are you sure that you have correctly connected the polarity of leds?
 
The following users thanked this post: DannnyG

Offline Terry Bites

  • Super Contributor
  • ***
  • Posts: 2469
  • Country: gb
  • Recovering Electrical Engineer
Re: Photocell
« Reply #4 on: May 30, 2024, 06:06:46 pm »
I mean put a filament bulb in parallel with the 12V leds. An old school tail light bulb or similar.
All common filament bulbs are tungsten.
 
The following users thanked this post: DannnyG


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf