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Electronic Firework Ignition System

  1. Jun 28, 2006 #1
    I want to use a 50-pin cable to ignite e-matches connected to fireworks. The e-matches require about 1 Amp to ignite. The individual conducting wires in the cable are obviously very thin, and thus can't conduct a continuous 1 Amp current. My question though is this: can the very thin conducting wires safely carry 1 Amp of current if just for a fraction of a second? And how does one go about figuring out how much current is safe for short pulses through similar wires?
  2. jcsd
  3. Jun 28, 2006 #2


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    Staff: Mentor

    What you are talking about is similar to how fuse currents are calculated. The amount of current that it takes to blow a fuse depends on the amount of time that the current flows through the fuse. Take a look at a typical fuse datasheet:


    The "Time Current Curve" graph is what you are asking about. I googled time current curve +wire, and got some good-looking hits. I don't have time right now to find the best hit in the list for you, but maybe look around this list to see if it helps:

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