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Overunity Machines Forum



Joule Thief

Started by Pirate88179, November 20, 2008, 03:07:58 AM

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dog812

#4840
April 10, 2009, 10:48:52 PM
Well i have given up on the color changer LED's .. they just dont seem to work very well with more than one..
I am powering 42 colored leds with just a JT and a AAA.. the only ones that seem to play nice together are the blues, whites and pinks..   I also added some greens but they dim the blues a little.

jeanna

#4841
April 10, 2009, 11:05:35 PM
Good job dog812!

waydago!!

It looks ready to go into a AA battery holder.

Is it?

jeanna

dog812

#4842
April 10, 2009, 11:09:40 PM
yah the case around the AA is so it will fit AA holders..
Because my led hula hoops are only 3/4" diameter . And the AA battery holders dont fit.. So i am stuck with the AAA - AA things..

I am trying to work out all the bugs before i put a hoop together with the JT in..

Any ideas how i can make it work better? Or get more LED's of differnt colors / voltages in there? Usually i like to use etleast 7 different colors, 3 of each.. = 21 in total.

jeanna

#4843
April 10, 2009, 11:24:32 PM
dog812,

It has been around 5 years now since I made some led "candles" using 2 AAA and 47 ohm resistor and a switch.

I wanted them to be brighter, In series they were all less bright and every time I put them in parallel one would be brighter than the other. I guess they must be pretty evenly matched. And, there is nothing for it.

It would be very tedious to hand match them every time you made them. At least they are so much more standard now, they don't give that same problem they used to with the same color. Well, maybe they still do, and there is enough phosphor on the brights that it hides the difference??

Actually Amigo occasionally stops by and gives us his favorite led site. If you read all the pages to get here, you have seen his posts. Maybe that led information could help. I hope so.

jeanna

dog812

#4844
April 10, 2009, 11:25:23 PM
I have tried using a resistor , the smallest one i have is a 47 ohm.. And the yellow , orange will light up.. but very dim..
Will a smaller resistor work? Like 1 ohm ?

Also what are caps used for.. i plug a cap in the board and it turns it off.. I put a 47 ohm resistor on one side and plug it in and it stays lit but dim.. ?
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