Translations of Records
- As may be commented on, data holds facts that bid further comment, or
better voiced as "commentaries".
Here we have the intitial fact that a small alternator being rotated
to produce 480 hz on seven pole face field rotor, before any energy
input is even sent into the field of the rotating electromagnet, an
output short amperage of between 2.1 and 3 A can be obtained with
shorts, depending on whether two or three shorts are chosen as loads.
Here is where a deduction is assumed whereby the current experienced
at short, is the maximum available current to be possibly attained.
(yet exceptions to this rule are found in only resonating a single
phase of three possible ones.) In the METR delta series resonances,
the obtainable current from the generator matches the same volume as
that obtainable by short; so in a sense we can say that this is the
most ohmic resistance we can add as as output, before that output is
reduced from its maxiumum operation of short.
It is by dividing the voltage reading found on short(1/3 volt) times
the found amperage on short(~ 1.5 A on two phase extraction) whereby
a Z(int) of the souce of emf is formulated, to be shown as ~ .2 ohms
for this case. It becomes more tempting to simple classify Z(int) as
R(int), since the contribution of internal impedance does not seem to
be present on the short. However evidently this small contribution
in Z(int) must be in there as a component, estimated as a quarter of
Now if we were to assume that the short current was entirely due to
the limitations of this Z(int) value as its internal inductive
reactance; by virtue of the fact that an equal opposite reactive
capacitive load could then be added; and in these circumstances the
value of current obtained with equal reactive loads superceeds the
amperage delivery at short.
I see now in retrospect that I may have grossly over-estimated the
Natural Resonant Frequency obtainable in an alternator, by virtue of
matched reactive capacity, as X(L)(int) However this is only by
theory. The initial idea to formulate the matched capacity X(C) as
the matched reactive load to the Z(int) of the generator was to
consider that draw as a purely inductive reactance draw, which
measured at 1.5 A, leads to an ohmic AC value of only .2 ohms,
meaning that an astoundingly high value of some 500 uf would be
necessary at 480 hz to replicate the same ohmic draw of .2 ohms.
However those projections are essentially based on a stator wire of
zero ohms resistance, as the R figure has not yet been added int the Z
(int) found reading. AS such a value far less then 500 uf may be the
true resonating capacity for this case. Or so one might think.
But in any case it could be far lower then expected. And in this case
from recorded notes we see that 1.5 A can be extracted with short,
but the stator voltage output then drops to one third of a volt;
whereby in contrast if 50 uf is placed as a load, then the same
amperage delivery is made, but now at a much higher voltage
delivery..? This is to be reinvestigated as replication.
Certainly these early notes contain many errors.
Lots of confusion here I can see, so re-measurements are in order.
I remember in the past that the only time alligator clip wire
connections would start melting was in conection to loads of large
capacity, so the subject will be returned to.
Here is where the missing piece of information comes in. I certainly
know that about 44 uf is correct to series resonate a ~.8 ohm METR
reactance of equal 7 ohms reactance, some 2.3 mh as the reactance
load to balance things at series resonance. HOWEVER THE SAME C VALUE
TO BE USED FOR SERIES RESONANCE MAY NOT BE THE BEST VALUE TO BE
EXPLOITED FOR PARALLEL RESONANCE, AND HERE NOTES INDICATE THAT 50 UF
DOES A BETTER JOB AS Q FACTOR PERFORMANCE IN THE TANK CIRCUIT THEN
DOES 44 UF.
In any case it is not convenient to place a 500 uf load, to note the
hypothetical q rise of stator voltage, but might we replicate the
same effect by introduction of an intervening high voltage
transformer, such as a pole pig. In this case the capacitive reactive
draw of the secondary should be reflected through the draw of the
primary on the alternator stator source, thus by charging the
capacity to a much higher voltage via the transformer medium, the
increased capacitive reactance draw mimics a charging of much larger
capacities to resonate with said internal reactance of the generator