Low voltage luxury LED bulbs GX5.3 GU53

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Christophe
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Low voltage luxury LED bulbs GX5.3 GU53




by Christophe » 05/09/07, 18:30

New LED bulbs are available in the shop at https://www.econologie.com/shop/ampoules-led-c-90


1) Luxeon 1W model consumption

- In direct current DC (electronic transformer): 146mA at 11,89V or 1,74W real
- In AC alternating current (induction transformer): 122mA at 11,81V or 1,44W real

2) Luxeon 3W model consumption

- In direct current DC (electronic transformer): 385mA at 11,89V or 4,58W real
- AC alternating current (induction transformer): 253mA at 11,71V or 2,96W real

Question: how to explain the big difference for the 3W model between AC and DC ?? (35% less consumption in AC)

A light output test is in progress: in fact I started but I noticed that a small variation in the angle of the spot greatly influences the measurements. So I have to prepare a kind of rigid support to make the measurements more reliable. But the output seems similar to that of halogen spots: it certainly consumes less but it also lights up less ...

Edit February 2015:

The tested bulbs have been replaced by more efficient and much less expensive models: LED bulbs

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Last edited by Christophe the 13 / 02 / 15, 13: 51, 5 edited once.
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bham
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by bham » 05/09/07, 19:05

Yes, you should be able to measure the light intensity (lux) to reduce this to the Watt consumed.
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by Christophe » 05/09/07, 19:21

This is what I intend to do I have a lux meter just for that :)
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by A2E » 06/09/07, 09:01

I have a silly question : Cheesy: : are these LED bulbs comparable in brightness to those which equip dynamo torches?
if yes it is interesting! : Cheesy:
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by Christophe » 06/09/07, 09:17

Uh I do not really understand the question ... but a luxury LED of 1W or 3W obviously lights the same whatever the device on which it is mounted (if the batteries of the torch are obviously optimally charged).

I am doing the light intensity test this morning if you want I can compare with one of our LED flashlights following the same protocol?
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by A2E » 06/09/07, 09:44

Christophe wrote:Uh I do not really understand the question ... but a luxury LED of 1W or 3W obviously lights the same whatever the device on which it is mounted (if the batteries of the torch are obviously optimally charged).

I am doing the light intensity test this morning if you want I can compare with one of our LED flashlights following the same protocol?


Yes, gladly, thank you! : Cheesy:
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by Christophe » 06/09/07, 09:58

Ok but you want me to compare with which model?

The problem is that the light cone is largely reduced (in comparison with the spots) in the case of a flashlight, it is therefore necessary to place the measurement points judiciously ...
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by Christophe » 06/09/07, 18:27

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by Wlad » 20/10/07, 11:04

Hello,

I am new to this forum. Seeking to save money on my lighting I did some research and I came across the tests of this forum.
Having not found a cost calculation, here is the table I made. I specify that I am a nozzle in term of electricity and calculation of consumption therefore it is possible that my reasoning has a flaw, I count on you to correct me : Cheesy:

I carried out a cost calculation for a ramp of 5 halogen spotlights of 20W low voltage. In short, a typical cable ramp. I base myself on the theoretical consumption therefore 100W, not having the device to measure the real consumption.
In my case this ramp is placed in the main living room of my home, with a lighting duration of 4h / day (19h-23h) from October 1 to March 31. The rest of the year, daylight is sufficient.

Image

Image

So an annual saving:
- In HP / HC tariff: € 6,43
- Basic rate: € 7,13

For an investment of € 97,50 when purchasing the 5 Luxeon bulbs (€ 19,50 per unit), the payback period is:
- 15,16 year in HP / HC tariff
- 13,68 years at basic rate
Obviously this does not take into account the progression of prices.

Out of all the articles I have read on the LEDs, it seems to me that the cost / quality ratio of the lighting is not yet terrible. For my part I regularly monitor what comes out to see the evolution of the cost and especially of the spectra proposed.

As for 220 spotlights and GU 10 socket, there are compact fluorescent solutions, but on low voltage ramps with GU 5.3 sockets, there is no alternative that gives me satisfaction.
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by Christophe » 20/10/07, 11:30

Thanks for this! You're not that bad (well, I haven't checked the calculations either ...)

It's interesting (especially taking different periods over the year) but did you take into account the cost of buying hallogens (lifespan is 2000h)?

If yes I do not see where it appears ...
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