DealExtreme - Some wins, some losses...

[Trevor Wilson]

....from my most recent purchases from DealExtreme.

The wins:

https://www.dealextreme.com/p/16w-3500k-950-lumen-warm-white-led-emitter-metal-strip-12-14v-65606

This thing is REALLY something very good indeed. Thin, unobtrusive, nicely
made and very, very bright. I compared it to an existing, 11 Watt T5 under
cupboard mounted fluoro. I noted an almost 100% increase in light available
in various places near the lamp in the kitchen. Current consumption was 0.7A
@ 12 Volts (regulated), measured with a light meter. SWMBO really liked the
warmth of the LED strip compared with the T5, along with the significantly
higher light output. I reckon this guy will actually enable me to dump the
50 Watt halogens from the kitchen, as soon as I can figure out a mounting
system. They need heat sinking. Nonetheless, unhesitatingly recommended.

https://www.dealextreme.com/p/auror...d-flashlight-with-assault-crown-1-18650-16091

Well, I don't really know if this is a win just yet. I neglected to note the
special Li-ion battery required. We'll see.

https://www.dealextreme.com/p/24w-3...lights-with-led-driver-5m-length-dc-12v-48910

This is really something very special. Excellent light output, good matching
of LEDs and dead easy to use. Even comes with it's own power supply.

https://www.dealextreme.com/p/100mhz-oscilloscope-probe-32422

Nice. Similar quality to what I pay WES 35 Bucks for.

The losses:

https://www.dealextreme.com/p/unique-novelty-credit-card-light-bulb-yellow-1-cr1216-28563

Waste of money.

https://www.dealextreme.com/p/mr16-5w-3800k-450lm-5-led-warm-white-light-bulb-12v-65173

450 Lumen, my arse. More like 0.1 Lumen. Looks like the driver is faulty.
I'll rip it apart and see what can be done. Watch out for this one.

 

[F Murtz]

...from my most recent purchases from DealExtreme.

The wins:

https://www.dealextreme.com/p/16w-3500k-950-lumen-warm-white-led-emitter-metal-strip-12-14v-65606

This thing is REALLY something very good indeed. Thin, unobtrusive, nicely
made and very, very bright. I compared it to an existing, 11 Watt T5 under
cupboard mounted fluoro. I noted an almost 100% increase in light available
in various places near the lamp in the kitchen. Current consumption was 0.7A
@ 12 Volts (regulated), measured with a light meter. SWMBO really liked the
warmth of the LED strip compared with the T5, along with the significantly
higher light output. I reckon this guy will actually enable me to dump the
50 Watt halogens from the kitchen, as soon as I can figure out a mounting
system. They need heat sinking. Nonetheless, unhesitatingly recommended.

https://www.dealextreme.com/p/auror...d-flashlight-with-assault-crown-1-18650-16091

Well, I don't really know if this is a win just yet. I neglected to note the
special Li-ion battery required. We'll see.

Just get the batteries with charger from ebay (cheaper than dealextreme)

 

[Mickel]

...from my most recent purchases from DealExtreme.

The wins:

https://www.dealextreme.com/p/16w-3500k-950-lumen-warm-white-led-emitter-metal-strip-12-14v-65606

This thing is REALLY something very good indeed. Thin, unobtrusive, nicely
made and very, very bright. I compared it to an existing, 11 Watt T5 under
cupboard mounted fluoro. I noted an almost 100% increase in light available
in various places near the lamp in the kitchen. Current consumption was 0.7A
@ 12 Volts (regulated), measured with a light meter. SWMBO really liked the
warmth of the LED strip compared with the T5, along with the significantly
higher light output. I reckon this guy will actually enable me to dump the
50 Watt halogens from the kitchen, as soon as I can figure out a mounting
system. They need heat sinking. Nonetheless, unhesitatingly recommended.

It claims 16W but only used 0.7amps. It truly is magic

https://www.dealextreme.com/p/auror...d-flashlight-with-assault-crown-1-18650-16091

Well, I don't really know if this is a win just yet. I neglected to note the
special Li-ion battery required. We'll see.

I have something similar I reckon it's awesome. It's so easy to carry
around so you can always have it in your pocket if you go away camping
or something like that. The only problem I have found is that it can
jump modes. I have to work out what is lose in there.

 

[Trevor Wilson]

It claims 16W but only used 0.7amps. It truly is magic

**In all fairness, I did current limit the thing to what _I_ considered
reasonable (Damned thing comes with zero information). Perhaps, with 14
Volts and a little over an Amp up their bum, they would consume 16 Watts. I
would be concerned with Pdiss and consequent life-span at those levels.
With 12 Volts, limited to 0.7 Amps, the thing was mighty impressive.
Significantly brighter (measured with a light meter) than an 11 Watt T5
fluoro is a fine effort.

 

[Clifford Heath]

I would be concerned with Pdiss and consequent life-span at those levels.
With 12 Volts, limited to 0.7 Amps, the thing was mighty impressive.
Significantly brighter (measured with a light meter) than an 11 Watt T5
fluoro is a fine effort.

How did you heatsink it? I mean, aesthetically, if you put these things
in your kitchen etc...?

 

[Trevor Wilson]

How did you heatsink it? I mean, aesthetically, if you put these
things in your kitchen etc...?

**I have yet to work that out, but I've noted that if I glue it to the
granite, there seems to be adequate 'heat sink' that way. I figure on
mounting it to a sheet of aluminium (say: 200mm X 100mm) and glue that to
the underside of the cupboard. I'll perform a few experiments that allow for
decent cooling and adequate SAF. Regardless of which way I go, it'll be a
whole lot less obtrusive than the fluoro it will replace. Even SWMBO has
suggested mounting it on stainless steel wires and hang it from the ceiling.
Mounted to a small block of aluminium, it could look nice and provide decent
cooling.

I have say that if you are remotely interested in LED lighting, buy one of
these things. They are very, very impressive.

 

[Mickel]

I have say that if you are remotely interested in LED lighting, buy one of
these things. They are very, very impressive.

I received one of these recently. Damn it is one really really bright
LED. It easily beats my pair of 150W flood lights in the back yard. It
has a couple of problem though. The first was that the light was very
floody, the standard flood lights that most household have a very
directional in comparison. THe second was the heat. After a couple of
minutes of running the Pentium 4 cooler I had it connected to was
getting too hot to touch. It would be ok I think if the fan was running
but the power supply if 36V so it would be difficult.

http://www.dealextreme.com/p/prime-100w-8000lm-led-emitter-metal-plate-pure-white-42806