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Author Topic: Incredible experience ...DIY shunt dc motor  (Read 4937 times)


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Incredible experience ...DIY shunt dc motor
« on: December 24, 2014, 07:03:11 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.

- 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.