Joule Thief LED Nightlight (with Fluorescent Science Design) (!)

Published

Introduction: Joule Thief LED Nightlight (with Fluorescent Science Design) (!)

I used my small joule thief circuit (https://www.instructables.com/id/Small-Joule-Thief/) in a couple of small nightlights, but they were more like doll's house lights! I wanted the nightlight to be functional so I had to scale it up a bit even though I prefer things small.  

I found a wonderful instructable here:https://www.instructables.com/id/Create-Homemade-Fluorescent-Black-LightUV-Display/ and used his ideas to fill my test tubes with fluorescent highlighter ink. Less really is more when it comes to fluorescence,  a fairly weak solution worked best for the level of light I wanted.

I found an old chemistry set in a charity shop a year ago and used one of the two test tube stands and three test tubes. I mounted the joule thief on a block of wood I cut from a jenga game - stuck him on the chemistry stand with epoxy and used thin rope I had left over to cover the wires. I was kindly advised to wire the (UV) LEDs in parallel and that is what I have done.  

I like the fact the light is economical, running on batteries which are dead to most intents and purposes, plus I've always wanted to enter a competition here and now I have! 

Share

    Recommendations

    • Planter Challenge

      Planter Challenge
    • Oil Contest

      Oil Contest
    • Clocks Contest

      Clocks Contest
    user

    We have a be nice policy.
    Please be positive and constructive.

    Tips

    Questions

    4 Comments

    Thank you all for your kind words!

    Cool, that looks great!