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Step #1:
Next
- The first thing is to make the big coil. You can do this by putting four nails into a board and wrapping the copper wire around them.
Step #2:
Next
- Then you have to make the smaller coil. It has to be about half the size of the bigger one. You need to put an LED/bulb and a capacitor on the output. I put 2 because I didn't have one that had the right value. You could also put a bridge rectifier on it to turn the AC into DC.
Step #3:
Next
- Connect the power to the big coil and put the small one in the middle and the LED should light up.
Step #4:

- I tested different gauge wire and the maximum efficiently I got was 42.2%.
no
yes, it would definitely matter if either coil was touching (shorting out turns) itself…this is basically an air core transformer, and the inductance is a function of the # of turns of wire, among other variables…
do you have any idea what the herts was bro? I think i got a special recipe for one.
What would be sufficient power? 9v? Or more?
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