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Thread: Hot resister problem

  1. #1

    Default Hot resister problem

    Electronics help required.
    Just working on my first saber. MHS parts as a base and some custom parts I made. Electronics, NB4, 3.7V battery, Tri Cree Red, Red, white, 26 AWG Wire. Got all the circuit together and seemed to work great. Only problem is the 2 resisters together are getting very hot. Too hot to touch after 10 seconds and I don’t know why? Resisters are (should be) 1.5 ohm 3 watt. Wiring is a bit of a mess as I didn’t buy enough, so had to use odd colours..Followed the circuit diagram in photo.
    Also final question, is it ok to splice in a bit of 22AWG wire as I don’t have any 26 left and don’t want to buy more. Any help much appreciated.
    Last edited by Greenkenzie; 04-22-2020 at 12:22 PM.

  2. #2

    Default

    Yes. you could splice the two different sizes together. Resistors get hot and dissipate heat, that’s what they’re suppose to do.
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  3. #3

    Default

    Thanks a lot, I didn’t realise that resistors got that hot.

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