Re: MIT wireless energy transfer etc. (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Mon, 30 Jul 2007 16:02:37 +0100
From: Chris Swinson <list@xxxxxxxxxxxxxxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: MIT wireless energy transfer etc. (fwd)

> ---------- Forwarded message ----------
> Date: Sun, 29 Jul 2007 19:09:29 -0600
> From: Gary Peterson <g.peterson@xxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: MIT wireless energy transfer etc. (fwd)
>
>>> . . . capacity loaded coils would have . . . higher Q. . . .
>> . . . top capacitance lowers Q. . . .
>
> There are three different wireless energy transmission methods associated
> with the name Nikola Tesla: 1) radio, 2) induction, and 3) "disturbed 
> charge
> of ground and air."  The first method is radiative; methods #2 and #3 do 
> not
> involve electromagnetic radiation, i.e., "radio waves."  You are presently
> confusing #2 and #3.
>

> Methods 1 and 3 involve a series of four concatenated tuned circuits for 
> the
> wireless transmission of electrical energy, two at the transmitter and two
> at the receiver.

Yes have seen Tesla's work on those, can be done easy enough.







>
> Tesla also used a series of four concatenated tuned circuits for the
> wireless transmission of energy by electromagnetic induction.  This work
> started at 35 South 5th Ave., and was subsequently adopted for lighting
> purposes at the 46 Houston St. laboratory. [NIKOLA TESLA  GUIDED WEAPONS &
> COMPUTER TECHNOLOGY, Anderson, L.I., Ed., Twenty First Century Books,
> Breckenridge, 1998, p. 62.]  Tesla also used the induction energy
> transmission method at Colorado Springs in order to test its efficacy as
> compared with the "disturbed charge of ground and air method."  In this 
> case
> the induction transmitter contained three of the tuned circuits, and the
> receiver was a single tuned circuit comprised of a one-turn inductance and 
> a
> capacitor.
>


Will get that book and have a look, I think what I have done is 3 tune 
circuit, though the receiver part does not sound right.





>     "This [shown in Fig. 59] is transmission of energy by induction.  Here
> is a tuned circuit, you see, out in the field with three incandescent 
> lamps
> and a condenser.  The energy is transmitted inductively, from the
> oscillator.  In this case, I have the primary supply circuit, the 
> energizing
> condenser circuit, the primary inducing circuit, and the secondary in the
> field as in the fourth circuit, all tuned -- four circuits in resonance."
> [NIKOLA TESLA ON HIS WORK WITH ALTERNATING CURRENTS . . . , pp. 93-94.] 
> ".
> . . it is found that with the above circuits and under such conditions 
> about
> 1 mile communications should be possible.  With circuits 1000 meters 
> square,
> about 30 miles.  From this, the inferiority of the induction method would
> appear to be immense as compared with disturbed charge of ground and air
> method." [NIKOLA TESLA  COLORADO SPRINGS NOTES  1899-1900, p. 29.]
>


Will have to think about this, I have what I think to be induction 
transmission, but the receiver still has to be in tune. Though saying that 
you can pass current between 2 toroids untuned but not as efficient.


chris


>
> ----- Original Message ----- 
>> From: Chris Swinson <list@xxxxxxxxxxxxxxxxxxxxxxxxx>
>> Subject: Re: MIT wireless energy transfer etc. (fwd)
>
>>> From: Ed Phillips <evp@xxxxxxxxxxx>
>>>
>>> . . . My personal thought would be that capacity loaded coils would have
>>> less loss [higher Q]. . . .
>
>> imho top capacitance lowers Q.
>>
>> chris
>
>
>
>