Confirming the Delayed Lenz Effect

[conradelektro]

"The Bedini type one transistor drivers are not optimal for N S N S rotors"

Have you ever tried one? I have great results from Bedini's bifilar SSG with N S N S diametric tubes and spheres. Really makes the r.p.m.'s soar!

@synchro1: I played a lot with "Bedini type" and "one transistor type" drivers for N N N N or S S S S rotors.

Specially a "bifilar coil Bedini type" circuit uses a lot of power (for the rather small torque it produces). I could build a low power driver for a N N N N or S S S S type rotor which uses a trigger coil, see http://www.youtube.com/watch?v=MEEjlYvZ5OM.

Since I do not believe that a N S N S rotor will lower the power requirement of a "Bedini type driver (bifilar coil)" I try to find a better driver (like the commutating driver I showed in my post above).

I have also seen on YouTube that many drivers (mostly Bedini type drivers) used for spinning diametric ring or tube magnets seem to use many Watts (4 to 8 Watts, or even more). This also makes me look for alternatives.

The most straight forward improvement for a N S N S rotor seems to be a circuit that commutates the drive coil (which sends the current through the coil in an alternating fashion, i.e. a full transistor H-bridge).

Have you carefully measured the power draw of your circuit (which spins your tube magnet and produces such great results)?

The first requirement for a self-runner (if that is possible) is a low power consumption, because one will not have to recover that much energy with a special coil (if it exists). And it is much easier to see a braking or speed up effect in a rotor which is driven with low power. With 4 to 8 Watts one can spin almost everything at high speed, it is an overkill.

Greetings, Conrad

[synchro1]

@synchro1: I played a lot with "Bedini type" and "one transistor type" drivers for N N N N or S S S S rotors.

Specially a "bifilar coil Bedini type" circuit uses a lot of power (for the rather small torque it produces). I could build a low power driver for a N N N N or S S S S type rotor which uses a trigger coil, see http://www.youtube.com/watch?v=MEEjlYvZ5OM.

Since I do not believe that a N S N S rotor will lower the power requirement of a "Bedini type driver (bifilar coil)" I try to find a better driver (like the commutating driver I showed in my post above).

I have also seen on YouTube that many drivers (mostly Bedini type drivers) used for spinning diametric ring or tube magnets seem to use many Watts (4 to 8 Watts, or even more). This also makes me look for alternatives.

The most straight forward improvement for a N S N S rotor seems to be a circuit that commutates the drive coil (which sends the current through the coil in an alternating fashion, i.e. a full transistor H-bridge).

Have you carefully measured the power draw of your circuit (which spins your tube magnet and produces such great results)?

The first requirement for a self-runner (if that is possible) is a low power consumption, because one will not have to recover that much energy with a special coil (if it exists). And it is much easier to see a braking or speed up effect in a rotor which is driven with low power. With 4 to 8 Watts one can spin almost everything at high speed, it is an overkill.

Greetings, Conrad

I run 12v solinoid inductor between the potentiometer and circuit. This reduces input down to the millivolt range by modifing the pulse width.

[wings]

Some interesting findings done by Tesla:

"I had discovered, however, that rotation is produced by means of a single coil and core; my explanation of the phenomenon, and leading thought in trying the experiment, being that there must be a true time lag in the magnetization of the core. I remember the pleasure I had when, in the writings of Professor Ayrton, which came later to my hand, I found the idea of the time lag advocated.  Whether there is a true time lag, whether the retardation is due to eddy currents circulating in minute paths, must remain an open question, but the fact is that a coil wound upon an iron core and traversed by an alternating current creates a moving field of force, capable of setting an armature in rotation.  It is of some interest, in conjunction with the historical Arago experiment, to mention that in lag or phase motors I have produced rotation in the opposite direction to the moving field, which means that in that experiment the magnet may not rotate, or may even rotate in the opposite direction to the moving disc.  Here, then, is a motor (diagrammatically illustrated in Fig. 17), comprising a coil and iron core, and a freely movable copper disc in proximity to the latter. To demonstrate a novel and interesting feature, I have, for a reason which I will explain, selected this type of motor. When the ends of the coil are connected to the terminals of an alternator the disc is set in rotation.  But it is not this experiment, now well known, which I desire to perform.  What I wish to show you is that this motor rotates with one single connection between it and the generator; that is to say, one terminal of the motor is connected to one terminal of the generator—in this case the secondary of a high-tension induction coil—the other terminals of motor and generator being insulated in space."

See Fig.17: http://www.tfcbooks.com/images/lectures/1892-02-03/017.gif

I recommend to read the previous and next paragraphs...Three paragrahs ahead Tesla states the well know quotation: " Ere many generations pass, our machinery will be driven by a power obtainable at any point of the universe"

Source: Experiments with Alternate Currents of High Potential and High Frequency; Lecture delivered before the I.E.E., London, February, 1892
http://www.tfcbooks.com/tesla/1892-02-03.htm

IF YOU ARE INTERESTED ON TESLA MOTOR READ THIS DOCUMENT
http://www.archive.org/stream/inventionsresear00martiala#page/67/mode/1up

[conradelektro]

@wings:

Can you deduct anything from Tesla's writings (e.g. from the ones you cited) that helps me to drive the ring magnet as depicted in my Reply #933 (just a few posts above) in a very efficient way?

Greetings, Conrad

[synchro1]

Zerofossilfuel reports positive results from a "Pancake Quadfilar":


http://www.youtube.com/watch?v=8oPAH8N4kaY&feature=em-subs_digest

My "Spiral Quadfilar" shares comparisons.