Re: Zener Diode for air core binary primary

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 


G.E. build a 1 million volt resonance transformer operating at 180 cy/sec.
The secondary was wound in a series of flat pie rings and stacked at
intervals.  It operated in compressed N2/CO2 blend.  Used to generate hard
x-rays for medical use.

Dr. Resonance

Resonance Research Corporation
E11870 Shadylane Rd.
Baraboo   WI   53913
 >
 > I had posted some time ago that I had constructed a
 > source frequency resonance circuit that can be used as
 > an air core transformer, but this is NOT exactly like
 > a Tesla coil, because it does not have a conversion to
 > a high frequency via an arc gapped primary. Instead
 > the circuits are simply based on a source frequency
 > resonance of 480 hz obtainable by an AC converted car
 > alternator. However with certain modifications I think
 > it might be possible to make the primary act similar
 > to that of a tesla coil,by using a step up transformer
 > to the primary and including an arc gap; but in that
 > situation there are many unknowns, and perhaps even
 > problematic issues that indicate it might not be
 > applicable to a source frequency resonance design in
 > the first place.  So what I wish to try next is to
 > make an experiment whereby I can try and determine
 > something that has been noted by others.
 >
 > How many cycles does it take for the source resonant
 > frequency circuit to reach its fullest voltage rise?
 > Surely this does not occur in merely one cycle.
 >
 > Let me digress somewhat further on the construction of
 > my primaries. They are ordinary 14 gauge coils of 500
 > ft on spools,~ 11 mh; obtainable at a hardware store.
 > In isolation they will resonate at 480 hz using 14 uf,
 > giving a decent q factor of around 17, for the
 > application I might wish to use. This means that when
 > they reach series resonance, the internal voltage rise
 > has risen 17 times what the alternator source of
 > voltage provides. But again I wish to understand what
 > time period is involved there for them to reach that
 > fullest voltage rise. So here I am contemplating the
 > use of a zener diode and scope to determine what this
 > time period might be.
 >
 > In the air core transformer I use two of these
 > primaries, each coupled to a high induction coil. The
 > reason I use two of them is for a very specific
 > option, that of having a choice as to whether I use
 > series  or parallel resonance for the primary
 > resonance, and the possibility of using an arc gap
 > between them to fluxuate that functioning. The
 > transformer is very efficient when run with the
 > primaries operating in parallel resonance, as this
 > represents the analogy of a power factor corrected
 > primary, however the actual amount of power transfer
 > to those primaries is quite low for that situation, so
 > I wish to try a switching procedure so that instead I
 > can run the primaries instead at series resonance
 > until the final voltage rise is attained to, and then
 > that voltage rise will be shorted out to convert those
 > primaries back to an instantaneous tank circuit.
 >
 > The reasoning for this is based on an experiment I did
 > that determined the following: the polarity of the
 > primaries magnetic fields in series resonance is
 > opposite to the polarity of those fields made in
 > parallel resonance. This means that if I have a
 > mechanism for instantly converting and making a
 > polarity change, the magnetic fields from the
 > primaries will be moving much faster through space to
 > get to the opposite polarity than what they ordinarily
 > move at when functioning at the source frequency of
 > 480 hz. Faster magnetic field movement through space
 > should translate to better effects on the air core
 > secondaries themselves.
 >
 > The mechanism for changing the series resonances into
 > a parallel functioning one is fairly simple. For the
 > series resonances each one is constructed inversely to
 > the other one, they are inversely phased series
 > resonances. What this means is that whenever one coil
 > is making a positive voltage rise, the other coil is
 > making a negative one, thus between the two opposite
 > series resonances, twice the voltage rise is
 > registered relative to each other, than what occurs on
 > just a single side. The moment we short those voltage
 > rises, this changes the entire circuit into a single
 > figure 8 tank circuit of maximum impedance. Thus as
 > one can imagine I want a selective technique whereby I
 > can apply that short in the proper timing, so that the
 > short only appears when the fullest voltage rise has
 > occured.
 >
 >  >From that thinking I decided to use just an ordinary
 > diode on the midpoint short path between the inversely
 > phased series resonances. This means that the circuit
 > appears series resonant for 1/2 cycle, and then
 > parallel resonant for the second half of the cycle. A
 > scoping of the coils in that regimen showed that
 > practically no voltage rise occurs in that scenario,
 > thus it then seems sensible to conclude it may take
 > quite a few cycles for the coils to reach their
 > fullest voltage rise.
 >
 > So having tried to explain the primaries construction,
 > and why I use two of them to give this resonance
 > switching option: my question becomes fairly simple,
 > why couldnt I use a diode that only turns on after a
 > specific voltage is reached, and I understand that a
 > zener diode does exactly that function.
 >
 > Can I use a zener diode exactly like an ordinary diode
 > works, or do they work differently schematically? Some
 > information I read about them implies that they do
 > work somewhat differently then an ordinary diode, but
 > I may have misinterpreted things. Couldnt I merely
 > place a zener diode on the midpoint path, and when the
 > break down voltage for the zener  between the
 > resonances occurs it would allow for conduction? If
 > this were so, I could turn the scopes sweep rate down
 > to a low value so that many cycles occur in a single
 > sweep: thereby making a nice experiment to ascertain
 > how many cycles a source frequency resonant circuit
 > takes to reach its highest voltage point, for these
 > particular inductors.
 >
 > Sincererly HDN
 >
 > =====
 > Tesla Research Group; Pioneering the Applications of Interphasal
Resonances
 > http://groups.yahoo-dot-com/group/teslafy/
 >
 >
 >