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Author Topic: Hairpin Project  (Read 104853 times)

Offline Pirate88179

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Re: Hairpin Project
« Reply #135 on: January 10, 2010, 08:02:42 AM »
Jeanna:

Remember on my first Jeanna Light replication (I am almost done with my second) where I could touch the pick-up lead end and not get zapped or burned, even though my cfl was lit brightly?  Then, I altered the collector turns and the base turns and.....ZAP!!!  It really hurt.  I think I figured it out but then XEE (I think that is who it was) agreed that I must have lowered my freq. to a point where it could penetrate my skin.  What a rude awakening that was.  Good lesson for me though.  I am not touching this new circuit.

Bill

Offline jeanna

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Re: Hairpin Project
« Reply #136 on: January 10, 2010, 08:32:29 AM »
Hi Bill,

I just checked to see.
575v
11khz
131r base resistor

The only thing I changed on this was the incoming voltage.
I switched to a AA 1.5v alkaline, for the time.

It is convenient to use commercial ac things from the hardware store, but they have such thick wire it is clumsy.
So, I was moving those heavy wires into place and held the thin secondary wire longer than usual.
I got 5 bad burns the other night when I hit the bcap to the leads of my 12v battery.
(I saw the awg 24 copper wire get red hot as it burned into my fingers in less than 1/4 second)

They have healed well, but this left my fingertips a little numb for the time, and I have a feeling this is how I didn't let go quickly enough tonight.
the frequency is 11Khz, which is much higher than what I have gotten with the very large toroid.

Isn't this an interesting topic?

I hope to make a video tomorrow. I want to reshoot because the wires are clumsy and it is hard to see clearly.  :D

fun,

jeanna

Offline sparks

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Re: Hairpin Project
« Reply #137 on: January 10, 2010, 01:21:37 PM »
@Jadaro


     I will try to find the patent and diagram.  It works on the principals of an ac induction motor with the exception that the pulsed ac windings are solenoidal and wrapped around a core.  The rotating magnetic field flux change is observed by a conductor instead of a squirrel cage rotor and dc is the output.  Not really a diode more like an ac motor driving a dc generator  without any moving parts.  This could convert highvoltage high frequency ac to some really clean dc. 

 @Jeanna

   Tesla always tuned his circuits. 

Offline tysb3

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Offline jeanna

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Re: Hairpin Project
« Reply #139 on: January 10, 2010, 07:57:19 PM »
Here is the transcription of the lecture Tesla gave regarding the hairpin circuit. (I called it the 3lampsexperiment.)

============
Referring to Fig. 1830, B and BJ are very stout copper bars
connected at their lower ends to plates c and c 1 respectively, of a
condenser, the opposite plates of the latter being connected to the
terminals of the secondary s of a high-tension transformer, the
primary p of which is supplied with alternating currents from an
ordinary low-frequency dynamo & or distribution circuit. The
p339


condenser discharges through an adjustable gap d d as usual. By
establishing a rapid vibration it was found quite easy to perform
the following curious experiment. The bars B and B1  were joined
at the top by a low-voltage lamp L3 ; a little lower was placed by
means of clamps c c, a 50-volt lamp L2 ; and still lower another 100-
volt lamp L1 ; and finally, at a certain distance below the latter
lamp, an exhausted tube T. By carefully determining the po-
sitions of these devices it was found practicable to maintain them
Picture 3.png ¨
all at their proper illuminating power. Yet they were all con-
nected in multiple arc to the two stout copper bars and required
widely different pressures. This experiment requires of course
some time for adjustment but is quite easily performed.
In Figs. 183b and 183c, two other experiments are illustrated
which, unlike the previous experiment, do not require very care-
ful adjustments. In Fig. 183b, two lamps, L1 and L2, the former a

p340

100-volt and the latter a 50-volt are
placed in certain positions as
indicated, the 100-volt lamp being below the 50-volt lamp. When
the arc is playing at d  d and the sudden discharges are passed
through the bars B B,, the 50-volt lamp will, as a rule, burn brightly,
or at least this result is easily secured, while the 100-volt lamp
will burn very low or remain quite dark. Fig. 183b. Now the
bars B B! may be joined at the top by a thick cross bar B2 and it
is quite easy to maintain the 100-volt lamp at full candle-power
while the 50-volt lamp remains dark, Fig. 183c. These results,
as I have pointed out previously, should not be considered to be
due exactly to frequency but rather to the time rate of change
which may be great, even with low frequencies. A great many
other results of the same kind, equally interesting, especially to
those who are only used to manipulate steady currents, may be
obtained and they afford precious clues in investigating the na-
ture of electric currents.
   In the preceding experiments I have already had occasion to
show some light phenomena and it would now be proper to study
these in particular ; but to make this investigation more com-
plete I think it necessary to make first a few remarks on the
subject of electrical resonance which has to be always observed
in carrying out these experiments.
========
I will next find the talk about resonance so it is properly worded.

@Sparks,
I have thought about what you were saying about the plasma and spark and those things, and I want to clarify what I think about it.
(btw what I think changes and grows all the time so I probably have less understanding than you have now...and certainly than I will have later.)

What I think now, is that the plasma that forms the arc and the spark is from the surrounding ether. I am sure that it does not come from the copper tube.
What I also think is that the electrons and the atomic frequency and energy of the copper is what provides the amps being used, which in this case is very small being mostly fast moving volts.

thank you.
I always think about what you say,

jeanna

Offline jeanna

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Re: Hairpin Project
« Reply #140 on: January 10, 2010, 08:07:00 PM »
Here is more that is relevant to our study :


But the effects which are produced by currents which
rise instantly to high values, as in a disruptive discharge, are
entirely different from those produced by dynamo currents which
rise and fall harmonically. So, for instance, there might be in a
given case a number of makes and breaks at d d equal to just
twice the frequency of the dynamo, or in other words, there may
be the same number of fundamental oscillations as would be pro-


317

duced without the discharge gap, and there might even not be any
quicker superimposed vibration ; yet the differences of potential at
the various points of the circuit, the impedance and other pheno-
mena, dependent upon the rate of change, will bear no similarity in
the two cases. Thus, when working with currents discharging dis-
ruptively, the element chiefly to be considered is not the frequency,
as a student might be apt to believe, but the rate of change per
unit of time. With low frequencies in a certain measure the same
effects may be obtained as with high frequencies, provided the rate
of change is sufficiently great. So if a low frequency current is
raised to a potential of, say, 75,000 volts, and the high tension cur-
rent passed through a series of high resistance lamp filaments, the
importance of the rarefied gas surrounding the filament is clearly
noted, as will be seen later; or, if a low frequency current of several
thousand amperes is passed through a metal bar, striking phe-
nomena of impedance are observed, just as with currents of high
frequencies. But it is, of course, evident that with low frequency
currents it is impossible to obtain such rates of change per unit of
time as with high frequencies, hence the effects produced by the
latter are much more prominent. It is deemed advisable to
make the preceding remarks, inasmuch as many more recently
described effects have been unwittingly identified with high
frequencies. Frequency alone in reality does not mean anything,
except when an undisturbed harmonic oscillation is considered.
   In the branch iiib a similar disposition to that in ib is illustrated,
with the difference that the currents discharging through the gap
d d are used to induce currents in the secondary s of a trans-
former T. In such case the secondary should be provided with an
adjustable condenser for the purpose of tuning it to the primary.

   iib illustrates a plan of alternate current high frequency
conversion which is most frequently used and which is found to
be most convenient. This plan has been dwelt upon in detail on
previous occasions and need not be described here.
   Some of these results were obtained by the use of a high
frequency alternator. A description of such machines will be
found in my original paper before the American Institute of
Electrical Engineers, and in periodicals of that period, notably
in THE ELECTRICAL ENGINEER of March 18, 1891.

I will now proceed with the experiments...

pp318-335 is the experiments part.
======

I think the high frequency alternator might be interesting to see.
I am still looking for the part about NOT looking for resonance.

jeanna

Offline sparks

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Re: Hairpin Project
« Reply #141 on: January 10, 2010, 08:32:41 PM »
   Perhaps we are both right.  The standing wave field is developed using hamonic input frequencies which produces the standing wave.  This would be the make and brake of his motorized spark gaps.  Or just may be putting the generator or supply circuit into oscillation.  The spark gap is used first as a capacitive coupling between the oscillating supply and the output.  But upon this standing wavefield is induced a transient wave.  The rate of change (as I have referred to numerous times over in the jt thread) or what Steven Marks called the kick traverses the standing wavefield.  The transition from o to 3ooo volts to o produces electromagnetic radiation well above visible light if you get my drift.  If you start to get into nanometer wavelengths atoms start getting vibrated apart.  Again the energy needed to ionize an atom is more dependent on frequency than intensity.  Throw the sweep speed of your osciiliscope all the way up.  If your shot still shows a vertical line your getting close.  If you do the same and there is no line but your spark gap is emitting light and sound then we are getting close.

@Jadaro

  The Tesla patent # is 381,970   It was issued in 1888 when dc was being distributed
« Last Edit: January 10, 2010, 09:55:39 PM by sparks »

Offline jeanna

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Re: Hairpin Project
« Reply #142 on: January 11, 2010, 04:31:25 AM »
OK here is my video replication using the joule thief instead of the sparks.

http://www.youtube.com/watch?v=4gj7IFCXw9Q

I works, folks.
In my view...
We need to understand how to calculate an equivalence of spiky volts and the volts we are accustomed to counting.
Anyone else?

wow, I am pleased!!

jeanna

edit
btw, I found this and copied it. Some of tesla's thoughts on resonance.
Yes Sparks I realize Tesla tuned his circuits. I did not mean to make it sound as though he did not.
j
« Last Edit: January 11, 2010, 04:53:17 AM by jeanna »

Offline forest

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Re: Hairpin Project
« Reply #143 on: January 11, 2010, 09:51:46 AM »
Jeanna,

Can you by using your JouleThief charge 400v electrolytic cap ? How fast can it be done ?
I think you can be interested also that Tesla radiant energy patent from 1900 indicate that you should be able to charge a cap by using a diode  joined  JT output with capacitor when one terminal of cap is connected to earth ground.

Offline jeanna

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Re: Hairpin Project
« Reply #144 on: January 11, 2010, 09:29:33 PM »
Jeanna,

Can you by using your JouleThief charge 400v electrolytic cap ? How fast can it be done ?
Hi Forest,
Before I had a scope the way I measured my secondary results was with a
full bridge rectifier with
2 additional diodes one each way following the polarity from the bridge, and
a camera flash cap.
Depending on how much I had (of course, because caps fill fast then slow down as they get close to the limit), this filling could take anywhere from 5 seconds to 1 minute.
I stopped using this method long before I got voltages over 150v, so I do not know what will happen.
I would try this again with a smaller secondary to see.


Quote
I think you can be interested also that Tesla radiant energy patent from 1900 indicate that you should be able to charge a cap by using a diode  joined  JT output with capacitor when one terminal of cap is connected to earth ground.
I am interested in this.

thank you,

jeanna


Offline Artic_Knight

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Re: Hairpin Project
« Reply #146 on: March 13, 2011, 04:51:35 AM »
i havent made it all the way through so pardon me if im repeating ideas here.

firstly current radio transmitters are partial ac systems but 95% of the power is sent over the air waves. its funny how the other 5% traveling through the ground seems louder on a radio that has its antenna properly grounded! in teslas work he reversed the roles transmitting his currents through the ground which has less resistance. this means having a capacitive antenna and a capacitor to block the transmissions from leaving the antenna but leaving the ground untouched so energy can leave it.

the hair pin circuit is for most purposes a normal step up high voltage transformer. note however the large "door knob caps" at the bottom of the rods. they block all flows of energy except a purely static electrical flow. in essence you should be able to make a low scale replication by having the 3rd coil of a joule capped at both ends with a high voltage caps. this should filter out the nasty currents. the coil however will need to be allowed to oscilate at its own frequency which means the right caps in farads needs to be paired with the right coil and needs to be pulsed at the right frequency. it will take a oscilloscope to determine these frequencies which im assuming most have.

lastly to make a spark gap in a solid state form has anyone tried pairing a set of diodes where one goes in one direction and the other diode in the other? if the diodes minimum is set to 100v then it will act as a 100v spark gap. atleast it would appear that way. i havent tested the results.

Offline forest

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Re: Hairpin Project
« Reply #147 on: March 13, 2011, 10:23:27 AM »
good ! and the results are scary ... due to energy escaping every where it can

Offline Tito L. Oracion

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Re: Hairpin Project
« Reply #148 on: March 14, 2011, 07:55:08 AM »
ok!

if you want a high amp dc from ac without using diode then STUDY THE CIRCUIT DIAGRAM OF A WELDING MACHINE OK!

AS simple as a piece of cake  ;D
 
;D
 

Offline Pirate88179

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Re: Hairpin Project
« Reply #149 on: March 14, 2011, 09:10:30 AM »
But welding machines are AC right?

Bill