LED lights

LEDs are Light Emitting DIODES.
A property of any diode is that it allows only one way current flow.

These guys hav them also but colored....Duo Yellow or White

Hiya Robin

Speaking of Lumins how well does the Primus light in your profile work ????

Hi Warfer

A very effective product , they use best LEDs and the claimed 300 lumens output is pretty good but they only achieve that with new batteries of low internal resistance type.

They still do not put out as much light as the common 11 watt folded fluros.

But it is there practicality that makes them so good.

The light is directed slightly upward so when put on a table they don't light up the surface that well , but are designed to have the top lid removed and be hung upside down and in this manner that light up a table really well.

Thought it was going to be a lazy night last night but got conned into helping swap out the rear axle/diff assembly of a falcon ute and placing the lantern on the ground , its light shone up and really assisted with the removal.

Then I decided to test my splicing of my plasma winch rope and hooked the winch up to a tree in the dark with this lantern used as a marker and again its sheer compact pick up and move usefulness made it a winner.

It uses 3 D cells and is not re-chargeable - might make some mods to mine if have time before next simpson trip in couple of weeks.

Hi Robin

Thanks for the info. That was what i was after, something to look for when buying them. I'll keep an eye out for the output.

Cheers
Dan

Robin

I suppose it's one thing to know to look for it but what sort of output do you think i would be after for the camper trailer? I'm assuming that lumens is the a measure just like watts in a household lightbulb where the higher the number the brighter the light? I don't want daylight just enough to be comfy...

Thanks again

Dan

Hi Dan

The more Lumens the more light, sort of like watts but not quite as watts is a power measurement and Lumens is the total light output.

In Leds 1 watt of good quality product is roughly 50-70 lumens

I find that the 100 lumens I have for the wagon section of my Patrol is sufficent to cook by and that the 300 lumens from the Primus is ok around a campsite, when hung upside as designed, but neither are sufficent for comfortable reading unless very close.

You may know that you can buy fluro tube replacements now in LEDs.

I am currently testing a newly developed 1/2 size 600mm fluro which only consumes 8w and outputs 700 Lumens, as much as the equivalent fluro in its main direction.

This is quite sufficent to read by.

Its similar to, but not this one ->

http://www.ledfx.com.au/UserFiles/File/LedFX%20FluroLED%201.pdf

Hi Robin- Thanks for the feedback. Now i've really got something to go off. I'd say about the hundred lumens will do us to as i don't want to read just cook and not trip over kids toys in the dark LOL. Will be going into town tommorow and can now check it out. Thanks again for your help.

Dan

Michael, I always worry about that, but amazingly, I prefer LEDs now. Apart from two bedhead lights that will cost quite a bit to change over, ALL of ours are LED and yes it has a charger charging at 14.4 volts and above at times. The life of the LEDs has been great in the three years

Michael,

The failure[s] is the unfortunate consequence of cheap manufacturing. LEDs work best with constant current drivers as they are very sensitive to voltage changes...resistors alone don't provide this. Additional protection against spikes is also needed when the vehicle is running.Drivers are available to do this job...eg...LuxDrive.

Avoid units using 5mm LEDs as earlier posts have indicated.

I now build my own light-strips ......no more grey steaks & frustration :)

eng hoe

Thanks moose unfortunately ( or fortunately depending on your look at things) i'm up in the bundy area. Thanks for the tip though.