Re: lightning a light bulb with one wire

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Malcolm Watts" <m.j.watts@xxxxxxxxxxxx>

Hi Bill,

On 11 Aug 2005, at 12:09, Tesla list wrote:

> Original poster: William Beaty <billb@xxxxxxxxxx>
>
>
> Hey, has anyone here tried this one below?
>
> Get two identical flyback transformers.  Build a small SSTC using one
> of them.  Hook its HV output to a couple feet of 40KV HV wire, and
> connect the other end of this wire to the HV terminal on the second
> flyback.  Add a short capacitive load by clipping an alligator
> cliplead to the ground terminal of the 2nd flyback's secondary.  Don't
> ground the coil, just leave the cliplead dangling.
>
> When you now run the SSTC, the other flyback will see a voltage
> becaause of the potential difference between the HV wire and the
> dangling cliplead.  The coil will resonate, produce an off-phase HV
> output, and will start sucking EM energy out of the SSTC.
>
> If you now wind a few turns of hookup wire around the ferrite core of
> the second flyback, you can use it to run an LED.  Add more turns and
> you can run one of those 40mS 1.5V incandescent bulbs from Radio
> Shack.  Add a diode (and a few more turns) and you can run a tiny
> solar-cell motor. It's a power distribution system, but with only one
> wire!
>
> I made mine with 5ft of wire between the two transformers, and it
> worked sometimes even without the cliplead.  I don't know the ratings
> on the flybacks.  They were larger than those 5KV units common on
> monochrome PC monitors, but not so large as the kind found in old
> console color TVs.
>
> Note: sometimes a pair of identical flybacks won't have closely
> matched frequencies.  In that case, first figure out which transformer
> has the lower frequency and use that one for the SSTC.  Then reduce
> the frequency of the 2nd flyback by connecting a few-picofarads
> trimmer across its HV secondary and tune it to resonance.
>
> Future plans:  make the SSTC tunable, then put TWO flybacks having two
> different frequencies on the same HV wire.  That way I can activate
> either one depending on the transmission frequency.
>
> Tesla coils used in the way Tesla himself did, with no sparks visible.

I've done a similar thing with two resonators separated by a couple
of yards, one powered and one passive. The "receiver" had a few turns
of wire round its belly with some incandescent torch bulbs as the
load. Frequency selective operation is used in many different apps,
not the least of which is radio.

Malcolm

>
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> William J. Beaty                            SCIENCE HOBBYIST website
> billb at amasci com                         http://amasci.com
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