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Old 12-26-2012, 11:19 AM   #43
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More stuff

http://www.dinodirect.com/led-light-bulb-gu10-110v.html

http://www.dinodirect.com/Light-Bulb-110V-60LED-E27.html

http://www.dinodirect.com/led-down-lamp-energy-saving-down-lamp-fashion-led-down-lamp-down-lamp-lamp-lamps-led-lamp-energy-saving-lamps-led.html

http://www.dinodirect.com/light-bulbs-11w-energy-saving-multifunction-led.html


Here is one you can even change the colors on.

http://www.dinodirect.com/lamp-bulb-...al-3w-rgb.html


Rope lights in this one as well. Who needs neon.
http://www.dinodirect.com/se-LED%252...%2520lighting/

Here is 12V only stuff

http://www.dinodirect.com/se-12V%2520LED/

Perry
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Old 12-26-2012, 01:31 PM   #44
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Interesting English! Look fast here! Now is writing:

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Old 12-26-2012, 04:33 PM   #45
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Positive LED retention

I'm planning on the over-the-door lights to be installed for 10 years before they need replacing, so I decided that the LED discs need positive retention in their sockets. A little acrylic and a heat gun plus about 3 hours time and viola! they probably aren't going to fall out.

Push down from the top to retain the side-pin versions:
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Push in from the front for the back-pin version:
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It probably doesn't matter much if the retention fingers disperse the light a little:
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Zep
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Old 12-27-2012, 12:33 PM   #46
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You going to have a lens over the front to keep the critters out of it?

Perry
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Old 12-27-2012, 02:00 PM   #47
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Quote:
Originally Posted by perryg114 View Post
You going to have a lens over the front to keep the critters out of it?

Perry
There's a photo in post 28, a piece of acrylic sanded with 400 grit paper.

Of course that was 4 days ago and the design has changed, at least internally.
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Old 12-27-2012, 03:02 PM   #48
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Zep, thank you for all your research!

It would be really nice to have outside lighting without having to deploy the awning and put LED rope light around its perimeter. We might still do that for festivity's sake, but sometimes it's nice just to flip a switch.
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Old 12-27-2012, 03:13 PM   #49
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Quote:
Originally Posted by webspinner View Post
Zep, thank you for all your research!

It would be really nice to have outside lighting without having to deploy the awning and put LED rope light around its perimeter. We might still do that for festivity's sake, but sometimes it's nice just to flip a switch.
I'm working on some easily hung fixtures and a way to plug them in next to the scare light. Details to follow..

Quote:
Originally Posted by perryg114
You going to have a lens over the front to keep the critters out of it?
Yes, they all have a sealed lens, per the earlier photo.

Zep
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Old 12-27-2012, 04:44 PM   #50
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Sovereign Bath light

The mid-bath is nice, but this light bar is a bit much. This bar light had 6 bulbs, drawing almost 9 amps.

It now has four LEDs, drawing less than 1 amp on bright and less than 0.04 amps on dim. Three of the LEDs have the 12 SMDs and the fourth one has the 10 SMDs. This light's one unique feature is that only one LED is powered when on dim--it's isolated with a 1 amp rectifier. The dim setting is achieved with a 150 ohm resistor.

The SPDT switch is on the fixture now, instead of the cabinet.

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Old 12-28-2012, 03:24 PM   #51
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Turns out, you can dim the LEDs that use the A61 regulator, but not nearly as easily as the non-regulated or the 7150 regulated discs. The A61 maintains pretty close to 2W power consumption over a much wider voltage range. For non-dimming applications, I'm beginning to like the A61 versions much better--they are about 35% more efficient and the color of their light is more of a pure white (not bluish, but definitely less warm than other "warm white" LEDs). This efficiency has nothing to do with the A61, of course, it's the 5050 LED chips, so that's another variable that can change "without notice."

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I am very disappointed in the 15-LED chip, although it appears that it is slightly more efficient than the 10-LED 7150 chip, since it puts out slightly more light for the same current. If you want maximum light (and maximum efficiency), go for the 10-LED chip with the A61 regulator. I'm still going to use a lot of the 10-LED with the 7150 regulator, just so I can dim them easily.

I didn't check the MR16 bulb substitute for brightness, but looking at its current curve, I'd guess that it has a maximum brightness about half that of the other 10-LED discs, but about the same efficiency. I don't see any advantage to this physical arrangement--you can buy discs with rear pins that are brighter and the glass envelope does not provide any spotlight effect, since the 5050 SMDs are on the face.

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The following charts should give you an idea what size resistor to use for dimming the LEDs. A 1/2 Watt resistor is sufficient, except below 47 ohms when dimming the 10-LED A61 disc. There is more data in the attached XLS file.

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This chart shows the same data as the above chart. You can see that the LEDs that use the A61 regulator don't exhibit the same curve reversal as the current approaches maximum, but it appears that the MR16 bulb does, and may have a A61 inside.
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This chart shows the same data as the above chart.
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My experience so far is that you can take these down to below 30 milliamps when you want a very dim light, eg, a nightlight. But I think for doing any kind of low-light task illumination, you'll wind up between 60 and 100 milliamps (60-120 ohms, depending on the LED).

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Old 12-28-2012, 03:26 PM   #52
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Here's the XLS data file for the previous post.
Zep
Attached Files
File Type: xls current draw test.xls (38.0 KB, 22 views)
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Old 01-10-2013, 09:38 AM   #53
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I finally got around to looking into the RFI problem. I put a 0.47 ufd cap on one of the offending LED side-pin lights. It didn't seem to help much. However, it's easy to do and I should have used a disc ceramic instead of mylar--they are much better at RF frequencies.

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The holes in the middle of the disc are for pins to make the disc into a rear-pin light. If you have a rear pin light, you can solder the cap right to the pins (down close to the disc).

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Old 02-27-2013, 07:25 PM   #54
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Hi, I am switching to leds that I purchased from AS. I can't tell you how much I am enjoying the task. I love twisting up and into the overhead lockers. So far I have 7 done, about 12 more to go. However...the easy one over the sink is putting me over the edge. I put the two little prongs in, test, it works, I put lens on and lite won't work, try another bulb, same thing, round and round I go. I am very careful to match up and put lens on correctly. What am I missing...really it would be nice to do a simple little task. Thank you. Sbb
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Old 02-27-2013, 07:35 PM   #55
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Will all of this cool work, we are gonna start calling you "L.E.D Zeppelin", oh wait...can you play lead guitar?
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Old 02-27-2013, 08:40 PM   #56
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No kidding, I get one in and literally cross my fingers as I turn the light switch on. Just can't understand why the lens is shutting the light off. Argggg
Try again tomorrow.
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