Re: [MBZ] OT: Shop lights
Craig McCluskey wrote: No, white LEDs have three diodes, one red, one green, and one blue. Many of them I've seen are internally blue, with a white (phosphor?) coating. My flashlight has a 1W white Luxeon Star emitter, claimed to put out 45 lumens. The phosphor seems to cut efficiency. I have seen household lamps that have multiple emitters blended to approximate white light, but they all seem to lose efficiency to resistors because they don't have enough LEDs to use 120V. ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] OT: Shop lights
I have seen household lamps that have multiple emitters blended to approximate white light, but they all seem to lose efficiency to resistors because they don't have enough LEDs to use 120V. Easily cured by putting a chopper in the design, but maybe they're not quite there yet. -- Jim ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] OT: Shop lights
It seems than at Wed, 27 Feb 2008 07:39:36 -0500, Mitch wrote: I have seen household lamps that have multiple emitters blended to approximate white light, but they all seem to lose efficiency to resistors because they don't have enough LEDs to use 120V. The _right_ way to use LEDs with 120V AC is to use a capacitor as the current limiting device, not a resistor. I don't recall the value, but because it effects the current not the voltage it doesn't matter if there is 1 or a dozen LED being driven. And no heat from a resistor that's wasting 118V. --Philip ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] OT: Shop lights]
Be careful about used fluorescent fixtures -- some of them run at weird voltages in commercial settings. I saw a Sears store being remodeled many years ago, the crew was filling up a 30yd dumpster with 4-bulb ceiling fixtures, so I stopped and asked if I could have some for my basement/garage/etc.. Guy says sure but they run at 140V (or something like that, I forget -- it was odd) and won't work in your house. But I did scavenge a bunch of the sunlight bulbs that were very pricey, and I think I am still using some in my shop lights now -- they make a very nice natural, easy-on-the-eyes light when mixed with the std blue ones. I never did figure out the voltage thing, how or why they have that in stores. --R LarryT wrote: Hi Jim, Thx for the suggestion. I hadn't considered 96 fixtures - will see what I can find on the used market. ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] OT: Shop lights]
Only problem, now you have to wear sunblock when working at your bench. ;-) Ed 300E On 26/02/2008, Rich Thomas [EMAIL PROTECTED] wrote: Be careful about used fluorescent fixtures -- some of them run at weird voltages in commercial settings. I saw a Sears store being remodeled many years ago, the crew was filling up a 30yd dumpster with 4-bulb ceiling fixtures, so I stopped and asked if I could have some for my basement/garage/etc.. Guy says sure but they run at 140V (or something like that, I forget -- it was odd) and won't work in your house. But I did scavenge a bunch of the sunlight bulbs that were very pricey, and I think I am still using some in my shop lights now -- they make a very nice natural, easy-on-the-eyes light when mixed with the std blue ones. I never did figure out the voltage thing, how or why they have that in stores. --R LarryT wrote: Hi Jim, Thx for the suggestion. I hadn't considered 96 fixtures - will see what I can find on the used market. ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] OT: Shop lights
Be careful about used fluorescent fixtures -- some of them run at weird voltages in commercial settings. Mine had 377V ballasts, which is why new 120V ballasts came with them. (That is the wye connection voltage of a 480V three-phase delta power source.) -- Jim ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] OT: Shop lights
My plan for shop/garage/basement lighting is incandescent bulbs throughout, with a pull chain on each one. Wattage will vary depending on why the light is needed in particular areas. I expect to replace them with LED white lights some time in the future when the next upgrades hits the market. I use drop lights and clamp lights for addition lighting in work areas. In the garage will be 40 and 60 watt. Basement storage areas will be 60 watt. My work areas will be 100 and 150 watt and I'll pull the chains when I need an increase. Harry On Tue, Feb 26, 2008 at 8:33 PM, Jim Cathey [EMAIL PROTECTED] wrote: Be careful about used fluorescent fixtures -- some of them run at weird voltages in commercial settings. Mine had 377V ballasts, which is why new 120V ballasts came with them. (That is the wye connection voltage of a 480V three-phase delta power source.) -- Jim ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] OT: Shop lights
I looked at some of the white LEDS available right now and, aside from the longevity, don't see the benefit? The power consumption is not that much less for the light output. Am I wrong? Is it still too early or was it the Chinese manufacturer's site I went to was shit? Zedic ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] OT: Shop lights
Jeff, I think its to early, there are plenty on the market, but the good stuff will show up in a couple of years. Then it will take quite a while for the price to drop. http://www.llfinc.com have some expensive fixtures on the market for new construction. Harry On Tue, Feb 26, 2008 at 10:24 PM, Jeff Zedic [EMAIL PROTECTED] wrote: I looked at some of the white LEDS available right now and, aside from the longevity, don't see the benefit? The power consumption is not that much less for the light output. Am I wrong? Is it still too early or was it the Chinese manufacturer's site I went to was not up to snuff. ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] OT: Shop lights
On Tue, 26 Feb 2008 18:33:36 -0800 Jim Cathey [EMAIL PROTECTED] wrote: Be careful about used fluorescent fixtures -- some of them run at weird voltages in commercial settings. Mine had 377V ballasts, which is why new 120V ballasts came with them. (That is the wye connection voltage of a 480V three-phase delta power source.) 277V Craig ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] OT: Shop lights
It seems than at Tue, 26 Feb 2008 22:24:56 -0600, Jeff wrote: I looked at some of the white LEDS available right now and, aside from the longevity, don't see the benefit? The power consumption is not that much less for the light output. Am I wrong? Is it still too early or was it the Chinese manufacturer's site I went to was shit? Zedic White LEDs use the same concept as florescent lamps. That is, bombard phosphors with energy and they will release light. An LED does it without glass tubes or mercury vapor. --Philip ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] OT: Shop lights
On Wed, 27 Feb 2008 00:16:13 -0600 Fmiser [EMAIL PROTECTED] wrote: White LEDs use the same concept as florescent lamps. That is, bombard phosphors with energy and they will release light. An LED does it without glass tubes or mercury vapor. No, white LEDs have three diodes, one red, one green, and one blue. To bombard a phosphor, you need UV light and LEDs don't make that. Craig ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] OT: Shop lights
I looked at some of the white LEDS available right now and, aside from the longevity, don't see the benefit? The power consumption is not that much less for the light output. I believe fluorescents are still king of light/watt. The LED guys still aren't much for factoring in their narrow cone of illumination versus the near-omnidirectional output of other sources. But for most uses it matters a lot. High-output LED's most definitely have a lifespan. -- Jim ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] OT: Shop lights
No, white LEDs have three diodes, one red, one green, and one blue. To bombard a phosphor, you need UV light and LEDs don't make that. I believe you're behind the times. For full-color LED displays they use the triad, but white-only uses a phosphor. And as such, those LED's have an even more pronounced life curve than other LED's. Just like a fluorescent or a CRT, where the phosphor ages to death. (Though most fluorescents die due to electrode poisoning first.) Unless _I'm_ also behind the times. -- Jim ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
