test test: SMD LEDs VS VS Halogen CFL

[gsans]

Here is one of 172 omnidirectional smd leds in E27!
Baleze!
The price seems to be too: € 69.50



Can it be used on the outside in a "over the door lamp"?

I saw the same model at 39,95 €



172 SMD LEDs - 7.5 Watt - 620 lumens - Natural lighting color - 3200 Kelvin and CRI of 62.

What do you think ?

[Christophe]

A) Well, I think that the drop in price does not make it less ugly ...

620 Lumens ca promises good brightness (equivalent to 14-15W fluorescent).

Difficult to think more without having it on hand.

Did you test it?

B) IMPORTANT NOTE about the SMD MR16 model

The model MR16 SMD 12V is incompatible with (some?) chopped electronic AC / AC power supplies

We have the 1st after-sales service return in this scenario.

It is therefore necessary to use either a ferric transformer (which makes a real sine, this is what we use) or a DC power supply: power supplies and transformers

Because of this, I will put a special LED IP67 power supply in the catalog.

[gsans]

Not tested yet, but I will probably be tempted ...

[Christophe]

a) Nice, hold on to the juice and have you equipped yourself with a luxmeter?

b) To avoid problems with electronic AC / AC power, here is special LED power supply with IP67 high level of protection (rain, outdoor, immersion ...) physical and electrical. Anodized aluminum case

[bernardd]

The model MR16 SMD 12V is incompatible with (some?) electronic AC / AC hash power supplies of this type: https://www.econologie.com/shop/transfor ... p-311.html

Do you know the technical explanation? It goes so far as to break the diodes
?

[Christophe]

Well yes it is known (the internal transformer to the LED bulb does not like pseudo sinus chopping) but it does not do it systematically with all LED bulbs (our luxons work).

The problem has been known for 1 moment but it therefore depends on the type of transformers used for the LEDs. See these topics dating from

2006: https://www.econologie.com/forums/quel-trans ... t2719.html
2009:
https://www.econologie.com/forums/ampoule-le ... t8772.html

[bernardd]

In fact, I even discover that there are 12V AC power supplies, I thought that at 12V everything was rectified / filtered to have a nice flat DC ...

[Patatrace]

Brand new fresh of the day, I stumbled upon it by chance trying to find out the reputation of Epistar which has released for a while GU10 7 * 1w bulbs in the shape of a cell with very high brightness 420 lumens.

Here is the news:

http://www.compoundsemiconductor.net/cs ... d=19732717

162lm / W! But it stays at high voltage (42v)

They hope to start production Q2 2011 so that suggests the first models in Q3 2011.

It's starting to get interesting! Provided they achieve the same performance for GU10 bulbs

[Christophe]

In fact, I even discover that there are 12V AC power supplies, I thought that at 12V everything was rectified / filtered to have a nice flat DC ...

No no most (99%? ) MR16 low voltage (or other) halogen style pendant lights (or other) bricos are supplied with AC / AC transformers (ferric or increasingly electronic). It is easier to do AC / AC than AC / DC. We even offer one (variable for halogen) in the shop: https://www.econologie.com/shop/transfor ... p-311.html

However, I would like to point out thatthere is no problem using the MR16 SMD (and other LED bulbs) with an AC / AC ferric transformer! That is to say the big heavy and bulky because their secondary tension is a real sinus ... but we find less and less.

But the ideal (for the life of the LED bulbs) is I think to spend all the same on 12V stabilized with this kind of power supply: https://www.econologie.com/shop/alimenta ... p-363.html

Given the price of quality LED bulbs, it will quickly pay for itself.

[Patatrace]

I confirm, I use this

https://www.econologie.com/shop/alimenta ... p-227.html

for 9 months on LEDs MR16 Elix 1 * 4W https://www.econologie.com/shop/ampoule- ... p-316.html and it's a treat, the light is constant, never a micro cut. Besides, we notice the quality of the power supply by the fact that when we cut the current it takes about 2 seconds for the LEDs to go out, proof is that the capacitor is well cut.