MR16 LED LAMPS

Submitted: Wednesday, Sep 10, 2008 at 04:24
ThreadID: 125034 Views:3604 Replies:3 FollowUps:0
This Thread has been Archived
Have received these from HonKong and they are first class. I have experimenting with LED lamps since they have become fashionable and have tried all sorts on combinations. These are warm white which has a slight yellow colour which emulates an incandescent lamp. Cool light also available. I have installed these in the bed reading fittings which need a wide angle light pattern. They would be ideal for ceiling lighting as well. At $8 each for 10 off delivered in the letter box you won't do better that that.

Site Link

Ern
Back Expand Un-Read 0 Moderator

Reply By: Frank Aus - Wednesday, Sep 10, 2008 at 05:43

Wednesday, Sep 10, 2008 at 05:43
I hope they are not the same as i tried, Ern as they only lasted about 6 weeks the duration of a recent SA tour, the ones i tried were 12 volt, and you need the mutlivoltage unit say 9 - 15 volts, (i have these now) the Leds dont like anything other than their nominated voltage, the multivolatge unit has a small voltage regulator inside, properly 6 volt, the voltage reg uses as least 2 volts to work, so hence the volt range on the unit. I now have a 3 watt unit but it cost $30.00 :(
Regards
Frank
AnswerID: 575920

Reply By: Deleted User - Wednesday, Sep 10, 2008 at 11:21

Wednesday, Sep 10, 2008 at 11:21
Frank a LED is a constant current device. The proper way to power them is to use constant current circuitry and not constant voltage circuitry. This is how the multi-voltage devices work.

I did tests on these lamps with the folllowing results:-
10v - 150ma
11v - 170ma
12v - 170ma
13v - 150ma
14v - 140ma
15v - 130ma

This indicates they are multi voltage although the box is marked 12v.

I have no idea as to the service life but the performance is excellent and the cost is remarkable. LED technology has come a long way in the last few years.

Quoted from the ebay listing.
"Forget about replacing burnt-out lamps ever again. These lamps have an average life > 50,000 hours, that's 50 times longer than a standard incandescent. Under normal usage you should get over 10 years life out of a single lamp." with 12 month warranty.

I have experimented with approx 30 different MR16 LED lamps and only had one fail so far.

cheers and beers
Ern
AnswerID: 575921

Reply By: Grumblebum & Dragon - Wednesday, Sep 10, 2008 at 23:12

Wednesday, Sep 10, 2008 at 23:12
I tried a number of el cheapo's via the internet o/seas. After a while the the LEDs started to die at the individual cell level. About 18 months ago I got some from the factory and have had no problem since.

John
AnswerID: 575922

Our Sponsors