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Tesla-switch part 1

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Uploaded by on Jan 22, 2009

A simplified Tesla-switch and a coil, just to show the back EMF.

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Science & Technology

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Standard YouTube License

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Uploader Comments (nilrehob)

  • Great work, is that a relay i hear clicking away, a rotary switch,(commutator is recommended)

  • Thanks, yes, it's a relay, but I'm working on a new circuit now thats quite different ;-)

  • Great stuff you're working with here! So did you originally want show that the back emf was the extra energy that you get when you use the tesla switch? Are you thinking of sending it back to the battery?

    And is it simply the spikes from the coil that is creating that electric potential you can sense with the voltage meter, or have you done something extra to achieve that effect?

    Thank you anyway :D

  • Thanks!

    I am capturing the spikes in part 2. In part 1 its just the coil, the batteries and the relay with the timer, nothing extra anywhere. If my calculations are correct, and I certainly may be wrong, the coil is quite big at 166 mH. (not uH)

  • Wow, yeah that's quite big :D

    Well, although you probably know it already, here is the formula to calculate the inductance:

    First: L = N €/l (number of windings times the ability of the material to make a magnetic field over its length.

    Second: Z(L) = 2 * phi *f * L (ZL is the resistance of your coil to changing current)

  • As its a multilayer air-core inductor I have used L(uH)=0.8(N*r)^2/(6r+9l+10b) and estimated N from the fact that the length of the wire is about 400m.

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  • Video is almost 3 years old and only 7,852 views, And a video of a cat playing keyboard has 30 million views, Not hard to see why we haven't progressed much as as species. Please keep up this fascinating work, Thank you,

  • Wow! this is very informative. I've never seen a video that has such a simple explanation of a Tesla switch. Also your Tesla switch is performing wonderfully.

    Cheers

  • Very nice, Thank you for showing.

    Cheers

    V

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