Driver for LED decoration lights

7 posts / 0 new
Last post
juhi81
Offline
Last seen: 6 months 3 weeks ago
Joined: 08/09/2010 - 13:36
Posts: 70
Driver for LED decoration lights

My wife bought 2 battery operated LED decoration lights. They work with 3xAA batteries. They are pretty nice looking but with a drawback. No regalation. Light starts to dim pretty soon. They maintain a reasonable brightness for few hours but after that they are moonlights...

 

Is there a driver available for this kind of light ?

 

Package indicates that there are 20 LED's in one light with 0.064W consumpiton per led.

 

 

 

Current flashlights: Mrlite KC-05  -  Ultrafire C3  -  Ultrafire C3 Stainless Steel  -  Romisen MXDL RC-G2  -  AKOray K-106  -  Fenix LD10 R4  -  X2000  -  Trustfire WF-502B MC-E&nbs

Don
Don's picture
Offline
Last seen: 10 months 3 weeks ago
Joined: 01/12/2010 - 16:32
Posts: 6617
Location: Scotland

www.dotlight.de will sell you a 10 or 20mA constant current driver for up to about 20 LEDs.

http://www.dotlight.de/products/en/LED-accessories/For-standard-LEDs/Dri...

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

juhi81
Offline
Last seen: 6 months 3 weeks ago
Joined: 08/09/2010 - 13:36
Posts: 70

Nice!

 

BUT

 

Shipping costs 9,95€ Frown

Current flashlights: Mrlite KC-05  -  Ultrafire C3  -  Ultrafire C3 Stainless Steel  -  Romisen MXDL RC-G2  -  AKOray K-106  -  Fenix LD10 R4  -  X2000  -  Trustfire WF-502B MC-E&nbs

Don
Don's picture
Offline
Last seen: 10 months 3 weeks ago
Joined: 01/12/2010 - 16:32
Posts: 6617
Location: Scotland

You could try 

 

http://www.dealextreme.com/search.dx/search.led%20driver

 

but it seemed to me that nothing there was suitable - I assume it is using 5mm LEDs which usually only need 20mA

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

agenthex
agenthex's picture
Offline
Last seen: 7 years 10 months ago
Joined: 07/14/2010 - 04:49
Posts: 3070
Location: Merica

Are you using nihm?

Reading this makes you smarter: http://lesswrong.com/

ezeqdb
Offline
Last seen: 7 years 3 months ago
Joined: 10/28/2010 - 23:33
Posts: 273
Location: Rosario, Argentina

"no le temo a la oscuridad, la oscuridad me teme a mí"

juhi81
Offline
Last seen: 6 months 3 weeks ago
Joined: 08/09/2010 - 13:36
Posts: 70

ezeqdb wrote:

I have this one on the way home: http://www.manafont.com/product_info.php/3meter-30led-whitecolor-holiday-string-lights-3xaa-battery-p-77

is yours something like this?

Yes, that is nearly the same light that i have. What i can see from the picture there seems to be a driver in your version. Mine has only a resistor in it.

 

And yes, I'm using NiMH's

Current flashlights: Mrlite KC-05  -  Ultrafire C3  -  Ultrafire C3 Stainless Steel  -  Romisen MXDL RC-G2  -  AKOray K-106  -  Fenix LD10 R4  -  X2000  -  Trustfire WF-502B MC-E&nbs