Quote from: webby1 on July 21, 2011, 11:58:39 AM
A thought experiment,

Imagine you have a core fixed in space, behind one end of that core at some distance you have a magnet with a pole face facing the core, fixed in space as well, now imagine that you have a moveable magnet facing the other end of the core with the same pole face facing the core, now imagine the stress the core sees as the moveable magnet approaches the core,, squish is what comes to mind for me,, now wrap a single layer coil around the core with a non resistive diode connecting the two leads together and imagine what happens to the winding as the moveable magnet approaches the core, as the flux change happens the coil will produce a field that is sync with one magnet and in repulsion to the other, ask yourself when does this induced field collapse.

Now take and wind another coil on top of the first one that is much bigger and goes through a FWBR into a cap.  When does the second coil produce current?  now instead of using a diode in the first coil take a 1\4 tap from the second coil, making sure that the 1\4 tap value is smaller than the first coil, and connect the first coil leads to that section.  Which coil can still produce current? what does the other coil see? when does this collapse?  What is the speed of the propagating magnetic flux that now gets to enter the core?

The bottom coil is effectively shorted
The change of magnetic flux through the windings of the top coil
will induce a current in that coil with different potentials between the tap points and the terminals.
What "out of the ordinary" is in your opinion supposed to happen?

Since the experiments sounds simple, have you built it to look for anything unusual?

Quote from: mondrasek on July 21, 2011, 10:38:19 AM
I see a lot of good work had been presented since I last checked!

I was actually on the road the past two days and just got home yesterday with enough time to finish my “antenna” testing
[...]
Also wondering if I can put a charge on a cap by wireless transmission if located close enough to the unit and wired to an antenna.  Maybe with a specific load and/or diodes?  Any ideas?

M.

hi Mo, welcome back!

yes, an 'Avramenko plug' should collect something, if you're radiating reasonably high freq./power energy from the operational motor-gen
(two diodes, A & B, in series, A-anode to B-cathode; connected in parallel with cap, opposite polarity, connect antenna to interconnection between diodes)

could try a few different valued caps (eg. 100uF, 1000uF, 4700uF, etc) - germanium diodes (eg OA93 or equiv.), or schottky diodes (but only if low leakage) would give less losses

try without load first (and only apply DVM to take V reading) to confirm if charging

hope this helps
np


http://docsfreelunch.blogspot.com

The backing/helper/regaugin magnets need to be clashing in polarity with the rotor magnet with the rotor magnets for sure otherwise it will slow.
the different facing backing magnets expereiment was with magnets behind cores of MOTOR coils (I think)

think about how the magnacoaster works - iron bar with say 4 or 5 neo ring-magnets stacked around one end, and jsut one magnet on other, so now the iron bar is polarized very-biased to one side, so the line in middle of iron bar where the polarity reverses (the bloch wall) is now shoved way over to one side...so now the polarity of that iron is very easy to flip over once it is polarized....and the flip over makes the extra power...this easy-to-flip-over state is what you want the magnet behind cores to be acheiving (easier said than done)
Just thinking;
remember that the rotor magnet has leading edge, and a trailing edge - even though it is hockey puck shape,
imagine that rotor magnet instead as a square block and FOR SURE there is a polarity to leading edge apporaching core, and trailing edge leaving core...and if you have aircore, you will see two humps of voltage on scope with sag in middle, since right at TDC is like eye of hurrcane from the magnet since flux shoots out at the EDGES (this with either block shaped or hockey puck shape too)

Anyways what I am getting at is that maybe the LEADING edge of magnet saturates the core, one polarity, and so the backing/helper/regauaing magnet is only there to make the "teeter-totter" easy to flip condiion of the core.
and then the TRAILING edge of magnet, is actually what FLIPS the core in polarity, and "normally" this trailing edge of magnet is overhwelmed by the leading edge, and usually will do nothing but if you can CONDITION that core with the backing magnet to be very sensitive and easy to flip you can get that trailing edg of maget to flip core polarity, and if you do this you will get that push-away instead of pull-back since the polarity of core flips. ... from the TRAILING EDGE OF MAGNET this is pretty good theory I think....I know for fact with aircores you can really see the way the trailing and dleading edge of big magnets makes the voltage peaks, not the middle of the magnet...and you know that you can pull-push a single rotor magnet with the motor coils flipping polarity very quick, so that the motor coils pull the leading edge to themselves, then push away the trailing edge so FOR SURE the magnet has oppostie polarities to the edges EVEN THOUGH THEY ARE ROUND HOCKEY PUCK SHAPE....must be that since the dominate field overwhelms, you dont "see" the poles "sideways" in a hockey puck shaped magnet..
I dont think the RS guy is Romero.. that would be too wierd if it was...RS dosent like to post on any forum...

Today I did try two bifilair coils in bucking and it gave better results than normal coils.

http://www.youtube.com/watch?v=RJV3zwtyjq8

scratchrobot

Quote from: scratchrobot on July 21, 2011, 02:56:07 PM
Today I did try two bifilair coils in bucking and it gave better results than normal coils.

How are you comparing the two?  Were they matched by inductance or wire length?  Was the bottom one mounted with the coil exactly the same distance from the rotor or by initial output voltage levels?