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Im going to make a led lamp... I have the idea just need some help in how to go about making it Answered

I have a glass candy looking sort of jar that i would like to flip over and build a small black circular stand to mount it on. Then frost the jar to give it a more ambiant looking light (i like blue leds but not necessary). I also need the lamp to be decently bright some where in-between a traditional desk lamp and a bright night light. I also and going to make a decal to stick to the outside of the jar to give it an illustration on the lamp. I dont want a battery operated one if possible id like a plug in with a switch or something. Something on the efficient side i don't like replacing batteries all the time, rechargeable may work. On that note i have a desk lamp already not sure what kind and brand i can check though, its a halogen i think it has a plug and a dial that brightens and dims it, i am willing to destroy if for this project that dial would be perfect . So what i need is recommendation on what and where to buy for lighting and details on how to mount it. I can handled most of the design of the arrangement, glass and decal im all over. More or less i need a cheap and decently easy way to light it im not super experienced in leds or a lot of wiring, im sure i can do it, would just be easier to avoid all of that. 

Any help would be much appreciated 

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Jack A Lopez

7 years ago

I claim the secret to understanding LEDs is the realization that they want constant current, not constant voltage.

For a single small LED (eg. the ones in a 3mm or 5mm bell-shaped plastic package), the usual trick is to put that LED in series with a single resistor and a constant voltage source, and this effectively gives you constant current.

For larger LEDs, (the ones are described in terms of their max power limit, e.g. 1 watt, 3 watt, etc) the trick of putting it series with a resistor wastes a lot of power, so that the resistor is dissipating almost as much, or more, power than the LED itself.    The usual solution to this is to use a special constant-current driver circuit for LEDs rated at 1 W, or greater.

To make a long story short, I have kind of answered this question before,
https://www.instructables.com/answers/How-do-I-power-1-watt-leds-can-these-not-be-hooke/

And also I have built a desk lamp based on a 1watt white LED, with driver for the same.  If you like I could show you some pictures of this lamp.  I never wrote that project up as an instructable, because there are a bunch of other similar projects, like:
https://www.instructables.com/id/LED-Tin-Can-Lantern/
https://www.instructables.com/id/Stacked-Glass-LED-Light/

I am guessing that a 1W blue, or white,  LED would be sized about right for the thing you are describing.  Probably the best prices you'll find, for both LED and driver module,  will be the Hong Kong retailers. Places like:
http://www.sureelectronics.net/
http://www.dealextreme.com/
Also eBay, http://www.ebay.com/
but again the best prices are probably to be found via Hong Kong (and other cities in China).  The only trouble with the Hong Kong guys is that shipping takes a long time to addresses like mine, in the Former US. 

Anyway, reply to this if you want to see some pictures of that LED lamp I built.

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amiller91Jack A Lopez

Reply 7 years ago

Awesome that makes sense thanks for the reply but i knida ended up cheating cause i speent like 3 day straight searching for a way until i found the perfect way thing for my lamp it came kinda pricey but just what i was looking for and more i ended up getting a flexible RGB led strip, a controller with remote, and a power converter. it will work perfectly because the controller will fit well in my base and the strip wraps up nicely in the bottom of my frosted jar an they are very bright but dimm to bee really low also and the change to any color and have a few diffrent setting which is pretty cool so untill i lose the remote for the damn thing i odnt for see any problems

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Jack A Lopezamiller91

Reply 7 years ago

I'm glad you found something that works. Sometimes paying more for something that, you know, just works, is sometimes the way to get it done. For years I wanted to build an old computer into a network attached storage (NAS) device, but eventually I just broke down and bought one, and that worked.

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amiller91Jack A Lopez

Reply 7 years ago

ya i took a good chunk of a pay check but it will be worth it i think. lol ya sound cool but kinda difficult lol