Board controlled power gate?

Discussion in 'Power Electronics' started by DrDoctor, Mar 31, 2018.

  1. DrDoctor

    Thread Starter New Member

    Mar 31, 2018
    Hello, I am working on a project where I will have conductive paint run from my hand up my arm to a board that senses touch. When I am touched it turns on EL Wire.

    My problem is that I am not sure how to gate the power of the EL Wire. The boards I've seen only take 5v power and I don't believe the signal output can be boosted with an inverter enough to power the EL Wire. So the easiest solution, I believe? Is to have some kind of gate controller in line between the inverter and the EL Wire that blocks current unless the board says otherwise. This wouldn't be an on/off switch, rather a "hold on with signal" "hold off with no signal".

    What should I be looking for or trying to build? If this doesn't quite make sense please ask and I will do my best to help clarify.
  2. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
    Explain it better, what is an EL wire?
  3. sghioto

    Active Member

    Dec 31, 2017
    From what I have read you need at least 50vac to power EL wire. Sparkfun sells a 3 volt DC to 110vac inverter for EL wire that will power up to 9 meters of wire. Is this about what you are talking about?
  4. be80be

    AAC Fanatic!

    Jul 5, 2008
    Flexible EL Wire Neon Light 3 Meters
  5. MisterBill2

    Well-Known Member

    Jan 23, 2018
    That level of voltage can give you an uncomfortable shock, or possibly worse. My suggestion is hidden wires and a remote control of some type. The only EL materials that I have played with required a higher voltage, closer to 150 volts peak. One shock from that small supply, which ran on 12 volts, and I was VERY CAREFUL from that point on. At the current thos EL devices draw you can use very fine wire, like #36, very easy to hide and very hard to see.