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'Tesla [OT] & Waterwheels'
2000\05\17@130714 by Andrew Kunz

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I was just looking for water wheel plans (haven't found them yet, anybody got
any for a 12-24" wheel that I can use to run a PIC project?) when I found this
link:


http://sun.kent.wednet.edu/staff/trobinso/physicspages/Web/P6Phys/Tesla/TESLA.HTM

Anybody understand the concept of "wireless tranmission of energy" that he
discovered?

Thanks.

Andy

2000\05\17@132210 by Alice Campbell

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Date sent:              Wed, 17 May 2000 13:06:18 -0400
Send reply to:          pic microcontroller discussion list <spam_OUTPICLISTTakeThisOuTspamMITVMA.MIT.EDU>
From:                   Andrew Kunz <.....akunzKILLspamspam@spam@TDIPOWER.COM>
Subject:                Tesla [OT] & Waterwheels
To:                     PICLISTspamKILLspamMITVMA.MIT.EDU

> I was just looking for water wheel plans (haven't found them yet, anybody got
> any for a 12-24" wheel that I can use to run a PIC project?) when I found this

Use a water pump motor from an automobile cooling system and
proceed as for wind-powered system we beat to death last
month.

alice

2000\05\17@134225 by Andrew Kunz

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Except I can skip the auto pump - I have a brook to power it.

The real goal of the project is to have an excuse to spend more time with my
dad.  This is something I remember he's always wanted to do since I was little.

What I'm looking for is woodworking plans (he's a cabinet maker, among a host of
other things).

Andy










Alice Campbell <.....1502amcKILLspamspam.....LO.SCSENG.COM> on 05/17/2000 04:08:00 AM

Please respond to pic microcontroller discussion list <EraseMEPICLISTspam_OUTspamTakeThisOuTMITVMA.MIT.EDU>








To:      PICLISTspamspam_OUTMITVMA.MIT.EDU

cc:      (bcc: Andrew Kunz/TDI_NOTES)



Subject: Re: Tesla [OT] & Waterwheels








Date sent:              Wed, 17 May 2000 13:06:18 -0400
Send reply to:          pic microcontroller discussion list
<@spam@PICLISTKILLspamspamMITVMA.MIT.EDU>
From:                   Andrew Kunz <KILLspamakunzKILLspamspamTDIPOWER.COM>
Subject:                Tesla [OT] & Waterwheels
To:                     RemoveMEPICLISTTakeThisOuTspamMITVMA.MIT.EDU

> I was just looking for water wheel plans (haven't found them yet, anybody got
> any for a 12-24" wheel that I can use to run a PIC project?) when I found this

Use a water pump motor from an automobile cooling system and
proceed as for wind-powered system we beat to death last
month.

alice

2000\05\17@134434 by James Paul

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Andrew,

Yes, basically radio transmission, but at very low frequencies.
At the receiver, you capture the transmitted radio energy, rectifiy
it, and use it to power whatever you need to power.  Mind you, this
is a nutshell analysis.  The actual process is a little more
complicated.  But this is the underlying principle.

                                         Regards,

                                           Jim





On Wed, 17 May 2000, Andrew Kunz wrote:

{Quote hidden}

spamBeGonejimspamBeGonespamjpes.com

2000\05\17@144327 by M. Adam Davis

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Used the same principles that the crystal radio is built on, just to a larger
scale.  Wireless transmission of energy is still expiremented with today.  I
remember seeing on TV a radio controlled plane which was tracked by a microwave
dish.  Apparently the plane had thousands of microwave antenna on its underside,
and the entire plane ran off the electricity delivered to the antenna.

The main thing is that most of his patents were sold by him, and even though he
was really pushing for this wireless transmission of power, the company that
held that patent wouldn't allow him to commercialize it himself, pursuing
instead AC line power transmission (in opposition to Edison's DC power)  I
beleive it was westinghouse who bought most of tesla's patents.  Tesla died a
relatively poor person...

-Adam

Andrew Kunz wrote:
> Anybody understand the concept of "wireless tranmission of energy" that he
> discovered?
>
> Thanks.
>
> Andy

2000\05\17@205818 by Gennette, Bruce

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If you have a decent head of water use a Pelton Wheel, 2 stage fan belt
gearing and a car alternator.  It uses a lot of water, but a PIC feedback
monitor could be used to control the feed valve . . .

As to transmitting of energy via radio waves - it's used a lot in
shop-lifting monitoring.  If a store (or University library, etc) has a
large loop antenna mounted vertically in a raceway they are probably using
this technique. RF power is pulsed in the antenna.  This RF travels to a
small antenna attached to store items where it is collected and run through
a couple of diodes and into a delay circuit then back out to the antenna
from where it is transmitted back to the large loop (which is now in listen
mode).

Very common.

Bye.

       {Original Message removed}

2000\05\17@220218 by Graeme Zimmer

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Hi Andy,

> Anybody understand the concept of "wireless tranmission of energy"
> that he discovered?

It is frequently claimed that he "lit 200 light bulbs from 25 miles without
wires". I would love to know more about this claim. Myself I recon it's an
"urban myth".

Having experimented with "Earth Current Communications", I well know that
you can barely detect a signal at 25 Km, let alone light a globe with
it.....

Interested in what others know about Telsa and "Terrestrial Stationary
Waves"......

My crude attempts to figure earth attenuation is at
       http://www.qsl.net/vk3gjz/earth/Range/range.html

..................... Zim

2000\05\17@223851 by Harold Hallikainen

picon face
       I don't believe anyone understands it because it was "vaporware."
Towards the end of his life, Tesla seemed to do a lot of promotion of
stuff that didn't really exist.  Communication with mars, etc. His
earlier inventions (3 phase power generation and distribution) are
certainly amazing.
       I did an Alta Vista search on "Terrestrial Stationary Waves". An
interesting site (which may or may not have been written by Tesla) is at
http://members.aol.com/buckscopal/teslatoc.html

Harold
(No Tesla expert, but I've read a couple books about him...)

On Wed, 17 May 2000 13:06:18 -0400 Andrew Kunz <TakeThisOuTakunzEraseMEspamspam_OUTTDIPOWER.COM>
writes:
> I was just looking for water wheel plans (haven't found them yet,
> anybody got
> any for a 12-24" wheel that I can use to run a PIC project?) when I
> found this
> link:
>
>
>
sun.kent.wednet.edu/staff/trobinso/physicspages/Web/P6Phys/Tesla/T
ESLA.HTM
>
> Anybody understand the concept of "wireless tranmission of energy"
> that he
> discovered?
>
> Thanks.
>
> Andy

________________________________________________________________
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2000\05\18@034742 by Alan B Pearce

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>As to transmitting of energy via radio waves - it's used a lot in
>shop-lifting monitoring.  If a store (or University library, etc) has a
>large loop antenna mounted vertically in a raceway they are probably using
>this technique. RF power is pulsed in the antenna.  This RF travels to a
>small antenna attached to store items where it is collected and run through
>a couple of diodes and into a delay circuit then back out to the antenna
>from where it is transmitted back to the large loop (which is now in listen
>mode).

this sounds horrendously complex, from what I have seen when I disassembled a
store tag. The tag seemed to be just a tuned circuit, and was disabled by
sticking an aluminium (coated Mylar?) sticky label on the tag. The sensor seemed
to just detect the presence of a tuned circuit in the path between the two
antenna units to raise the alarm. Other sensors I have seen have a magnetically
latched function inside them to achieve the same effect by physically moving
something to change the resonant frequency of the tag.

2000\05\18@110021 by Mike Witherden

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Andrew Kunz wrote:
> Anybody understand the concept of "wireless transmission of energy" that he
> discovered?
>
My understanding is that the reason it was never commercialized is because most people were afraid of the long term effect (on Humans) of  the very very large electromagnetic fields needed to implement Teslas idea commercially.  But for small power needs over short distances it is great.

To test it out just build a 50 or 60 Hz receiver and see what power you can get around your home!

MikeW

2000\05\18@111858 by David VanHorn

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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


>this sounds horrendously complex, from what I have seen when I disassembled a
>store tag. The tag seemed to be just a tuned circuit, and was disabled by
>sticking an aluminium (coated Mylar?) sticky label on the tag. The sensor
seemed
>to just detect the presence of a tuned circuit in the path between the two
>antenna units to raise the alarm. Other sensors I have seen have a
magnetically
>latched function inside them to achieve the same effect by physically moving
>something to change the resonant frequency of the tag.

The previous was mythology.

These tags are sensed by what is essentially a large grid-dip meter. The
tag absorbs energy at it's resonant frequency. The scanner is swept across
the range of tag response, since the tags are hardly precision devices. In
fact, it's accepted that some 5-10% of the tags will be dead from
manufacturing errors. When the scanner sees a dip in each sweep for several
sweeps, then it sounds the alarm.

They are usually disguised as a bar code, though casual inspection will
show that they are not any real barcode.



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2000\05\18@112522 by David VanHorn

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face
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


>My understanding is that the reason it was never commercialized is because
most people were afraid of the long term effect (on Humans) of  the very
very large electromagnetic fields needed to implement Teslas idea
commercially.  But for small power needs over short distances it is great.


The widely shown picture of tesla sitting in the primary coil with large
sparks is a fake. (by tesla)  Double exposure.

- --
Are you an ISP?  Tired of spam?
http://www.spamwhack.com  A pre-emptive strike against spam!

Where's Dave? http://www.findu.com/cgi-bin/find.cgi?kc6ete-9

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2000\05\19@002835 by Javier Grijalba

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Where can I find more info on transmitting energy via radio waves ??
Other applications than shop alarms ??
Bye
Javier

----- Original Message -----
From: Gennette, Bruce <RemoveMEbruce.gennettespamTakeThisOuTTAFE.NSW.EDU.AU>
To: <PICLISTEraseMEspam.....MITVMA.MIT.EDU>
Sent: Wednesday, May 17, 2000 7:54 PM
Subject: Re: Tesla [OT] & Waterwheels


> If you have a decent head of water use a Pelton Wheel, 2 stage fan belt
> gearing and a car alternator.  It uses a lot of water, but a PIC feedback
> monitor could be used to control the feed valve . . .
>
> As to transmitting of energy via radio waves - it's used a lot in
> shop-lifting monitoring.  If a store (or University library, etc) has a
> large loop antenna mounted vertically in a raceway they are probably using
> this technique. RF power is pulsed in the antenna.  This RF travels to a
> small antenna attached to store items where it is collected and run
through
> a couple of diodes and into a delay circuit then back out to the antenna
> from where it is transmitted back to the large loop (which is now in
listen
> mode).
>
> Very common.
>
> Bye.
>
>         {Original Message removed}

2000\05\20@083915 by Russell McMahon

picon face
AFAIK he lit the famous Crystal Palace Exhibition (1891 comes to mind but
probably wrongly) completely wirelessly. Better than your average
vapour-ware.


     Russell McMahon
_____________________________




{Quote hidden}

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