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Main => Main Forum => Topic started by: milhouse on March 16, 2011, 11:49:34 am

Title: El Wire / Power Question
Post by: milhouse on March 16, 2011, 11:49:34 am

I just ordered some El Wire to play around with, possibly to use on my control panel.  It runs off a battery back containing 2 AA batteries.  I'd like to run it off 5V from my computer.  Can anyone tell me the type or circuit I'd need to use?  I am guessing its just a matter of installing the right resistor, but I'm not sure of the calculation.

Thanks.

Title: Re: El Wire / Power Question
Post by: VanillaGorilla on March 16, 2011, 11:58:58 am

AA batteries output voltage varies based on composition. Alkaline produce 1.5 volts. Lithiums are 3v, and Li-Ion rechargables about 3.6 volts. If its running off of 2 aa batteries now you are producing between 3-7.2 volts output. Have you tried just hooking up 5v to see how it reacts?

Title: Re: El Wire / Power Question
Post by: milhouse on March 16, 2011, 12:05:46 pm

I don't have it yet.  I am just concerned it will act like an LED and "pop" if I provide too much voltage.  Is there a fundamental difference in el wire where that isn't an issue?

Thanks.

Title: Re: El Wire / Power Question
Post by: yotsuya on March 16, 2011, 12:26:59 pm

You might be able to pick up a USB inverter on eBay. I have one of those battery pack EL wires setups for a costume I am building for my daughter, but once she's done with it I might repurpose it for my own use. The USB inverter might be the way to go.

Title: Re: El Wire / Power Question
Post by: VanillaGorilla on March 16, 2011, 01:19:16 pm

I was gonna suggest the USB inverter also. They can be had for 5-7 bucks, if you're in the US...

Title: Re: El Wire / Power Question
Post by: DaOld Man on March 16, 2011, 05:17:29 pm

Id say try it with 4 batteries first (6 volts). If it doesnt fry anything after a few minutes it should be ok at 5 volts. If it does fry, buy the USB inverter. I dont think you will hurt the wire itself.