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Author Topic: Incredible experience ...DIY shunt dc motor  (Read 6263 times)

Offline leadsrobot

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Incredible experience ...DIY shunt dc motor
« on: December 24, 2014, 07:06:44 AM »
Incredible experience ...
I am French I speak little English which is google translation!
I do not know anything in the motor and electronics, to look after I decided to contruire small engines pendulum motor, two-pole motor with one coil, with 2 coil motor, reed motor, motor hall, one or two transistor motor ...
Then I decided to dig what seemed to me the most effective with a stack of 1 to 1.2 volts. and see how long I can run an engine with a stack of 1 volt, an hour, a day, a month, a year ..?

-1 Rotor diameter of 15 centimeters and 5 centimeters thickness of lightweight plastic to use the pendulum effect and the effect of resonnance.

-on the rotor there 4 south magnets to pulse the rotor magnet 4 and north to generate ac current.

- I use a reed switch south to save the battery.

- The rotor is suspended horizontally by a carbon shaft 6 mm and a magnetic bearing, there is the minimum of friction to save the battery.

- A coil pinball square serves me stator coil. it has a ferrite structure, the turns of the coil are oriented perpendicular to the magnets, In this case, there is no magnetic coupling between the rotor (magnet) and the stator (coil) in the repulsion phase whatsoever for north or south magnets.
(the hen loving north travel the power is off)

- Another bigger coil south oriented  is placed diametrically opposite to the stator coil, the coil windings are oriented perpendicular to  the magnets,  the coil is used to generate  current with an ac bridge / dc generates 2.5 volts ..

- The wire used is 27 AWG.

- A cylindrical flywheel inertia of 100 g and 5x5 cm is placed 10 inches below the rotor, the axis freely ends in a hole of 7 mm.

- Adjust the engine starts well alone (pendulum effect) he turns more at least 500 rpm. It responds well to various loads.

The circuit is very simple battery 1.2 volt, 1 farad capacitor 5.5 volt, 1 reed switch placed under the cylindrical coil generator, and 3 crocodile cables.
the frame of the assembly is made of plywood.

Tested the battery terminals CEMF / BEMF ranges from 0.5 to 5 volts . hang three days I tested all the possibles connections with the two coils even the most improbable. I understood that the capacitor refused any burden than 1.2 volts.

And it's the same yesterday I was amused to test and in the following configuration 1 battery 0.8 volt wire connected to at least the stator to a regulator AC / DC with the + and - are connected to the + and - the battery
my multimeter it panics displays 5, 9, 10, 19, 25, 4, 1.20 volts ... ect  has any vitesse it for 10 minutes I wondered if I was not dreamed, and all of a sudden in a loud noise and the engine jumped net blocked. while current usually cut it runs 1 to 2 minutes. (This is the harmonic 5?).
  - I realized that the stator could generate more and should be a "special system" to convert the AC current very fluctuating and then reguler and return only 1.2 to 2 volts in the circuit.

I will make that special  system ac / dc very fluctuating and test it .... and instead of flywheel I'll put a generator ac 20 cm in diameter with 8 ferrite magnets (lighter) and a stator 5 cm high 68 cm in circumference with a wire winding 2 layers perpendicular to the magnet wire AWG 27 (to avoid the magnetic coupling).

who could tell me what happened and how it is with 1 volt CEMF / BEMF can reach 25 volts.

Free Energy | searching for free energy and discussing free energy


Offline FatBird

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Re: Incredible experience ...DIY shunt dc motor
« Reply #1 on: December 24, 2014, 02:38:29 PM »
Please post a diagram or photo.


                                                                                                   .

Offline Floor

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Re: Incredible experience ...DIY shunt dc motor
« Reply #2 on: December 24, 2014, 03:38:52 PM »
@LeadsRobot

            welcome

              You should post a drawing and very specific details of your device.

I would be helpful to you,  if you will aquire for your self, a very clear understanding of the definitions
of voltage, amperage, electrical resistance, power and OHMS LAW.

With out your understanding these basic concepts first, any explinations to you will be meaningless to you.

Don't let others discourage you, from your experimentations.

                    best wishes
                      floor

Free Energy | searching for free energy and discussing free energy

Re: Incredible experience ...DIY shunt dc motor
« Reply #2 on: December 24, 2014, 03:38:52 PM »
Sponsored links:




Offline leadsrobot

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Re: Incredible experience ...DIY shunt dc motor
« Reply #3 on: December 24, 2014, 04:08:59 PM »
picture

Offline TinselKoala

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Re: Incredible experience ...DIY shunt dc motor
« Reply #4 on: December 24, 2014, 05:00:19 PM »
@leadsrobot:
Quote
who could tell me what happened and how it is with 1 volt CEMF / BEMF can reach 25 volts.

I can't speak about much of your post because I'm not really understanding what you are describing about the "loud noise and the engine jumped net blocked", but I can tell you this much anyway:

DMMs do pretty well measuring regular sinusoidal AC, even at high frequencies, but they are very sensitive to fast spiky signals. This is because they "sample" the signal digitally and integrate the samples over a time period, to produce a short term average that is then displayed on the meter. Your reed-switch motor is producing short, high amplitude "backspikes" or rather inductive collapse spikes that can indeed reach high voltages. The faster and cleaner your reed switch is able to shut off the coil current, the higher the voltage rise in these short spikes. This is probably what is confusing your meter.

I would not be surprised at all to learn that you are actually producing more than 25 volts peak amplitude in these spikes. Using a diode and capacitor along with a DMM voltmeter you can determine what the true maximum amplitude of these spikes really is. It can be many times the actual input voltage to the drive coils.

You can use the same combination of a fast diode and a reservoir capacitor that I show in this video, measuring the output of one of my Joule Thiefs, to measure the spike amplitude from your pulse motor.
http://www.youtube.com/watch?v=CAkgwBS8q4A
This is a general method for extracting the inductive collapse spikes for measurement, or for use elsewhere in the circuit, from just about anything that makes this kind of spiky voltage.

You can also greatly extend the life of your reed switch by putting a tiny ceramic capacitor across the reed contacts (in the last half of the video):
http://www.youtube.com/watch?v=NFLBrRfXfJ0
(I used 33 pF ceramic capacitor for the reed protection, and 0.1 uF poly film type for the reservoir capacitor. Hook your voltmeter up instead of the neon, to read the maximum amplitude of your spikes.)

I'll be looking forward to seeing your results!

And a bit of advice for image posters: If you keep the pixel width of your posted images to 1024 pixels wide or less, this will keep the page narrow enough to fit on the screen without having to scroll to the right to see it, see the reply buttons, etc.

Free Energy | searching for free energy and discussing free energy

Re: Incredible experience ...DIY shunt dc motor
« Reply #4 on: December 24, 2014, 05:00:19 PM »
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Offline TinselKoala

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Re: Incredible experience ...DIY shunt dc motor
« Reply #5 on: December 24, 2014, 05:14:17 PM »
@leadsrobot:
Quote
A coil pinball square serves me stator coil. it has a ferrite structure, the turns of the coil are oriented perpendicular to the magnets, In this case, there is no magnetic coupling between the rotor (magnet) and the stator (coil) in the repulsion phase whatsoever for north or south magnets.
(the hen loving north travel the power is off)

It seems to me from this statement that you may actually be using the Core Effect, rather than traditional electromagnetic attraction/repulsion to drive your motor! This would be really nice. But I can't really tell from the description if that is actually the case.

The Core Effect is due to a change in the permeability of the coil core material caused by the current in the coil. This reduces the attraction, both N and S, of any magnet to the core itself, when the current is on. So a core effect motor turns the coil on just as the rotor magnet passes the closest point of approach, so the rotor magnet isn't "dragged back" as much as it moves away. This can easily be mistaken for a "repulsion" but it really isn't. If the motor behaves the same way when the current to the coil is reversed (like with a DPDT switch) then you probably have a Core Effect happening.

Anyway, good luck and I'd love to see a video of your motor running.

Offline leadsrobot

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Re: Incredible experience ...DIY shunt dc motor
« Reply #6 on: December 24, 2014, 09:53:49 PM »
@TinselKoala

Quote
"I can't speak about much of your post because I'm not really understanding what you are describing about the "loud noise and the engine jumped net blocked", but I can tell you this much anyway


and suddenly a loud noise the rotor has stopped net and wooden frame and has jumped layer on one side as usual after the battery the engine continues to run at least one minute .

I think I have found a module to retrieve the CEMF / BEMF I would have in ten days,

These Modules can accept instantaneous input voltages ranging from 0.0V to +/-500V AC or DC, and input currents from 1nA to 400mA from energy harvesting sources that produce electrical energy in either a steady or an intermittent and irregular manner with varying source impedances and is then able to supply power from 1.8V to 3.6V

Free Energy | searching for free energy and discussing free energy

Re: Incredible experience ...DIY shunt dc motor
« Reply #6 on: December 24, 2014, 09:53:49 PM »
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