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Forum Index : Off topic archive. : Cheap reading lamp
| Author | Message | ||||
vasi Guru  Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
I bought a few reading lamps, made in China. 
It have 8 LED's 
and all are soldered in parallel. The wires are connected via a switch to 3x AA sized batteries. 
So, LED's are connected to 4.5V and I think is too much. I like these lamps and I want to make them resist longer. I think a 56R resistor will do the job. Or maybe 1k resistor if I want to use a LM7805 to connect them to a 12V system. These lamps I think can be found also in Australia. Any experience of using them? Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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| woofnumber0 Newbie  Joined: 26/04/2008 Location: United KingdomPosts: 10 |
Hi tryed simlar ones out of the pound shop,pen lights with 3 led connect to the usb ,6volt took the pen out wired them in seris,stuck another stem in the pen hole,from another light.Great if u stick them through your cap,for walking down to the pub on dark nights or as a night light outside your cabin fully ajustable both stems.ps speeling is my week point |
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