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Thread: 3-coiler spinning up

  1. #1

    3-coiler spinning up

    Hi,

    I am building a machine with 3 sixfilar coils and a small rotor with three magnets. First I ran a test with only one of the coils -- trigger and one power strand, found the sweet spot as you usually do, and nothing unusual when changing the 1k pot.

    I then mounted two more coils, connected as slaves with one power strand each. Now when I run it I find a sweet spot at first as usual, but when I back off a little on the pot suddenly the already fast spinning small rotor accelerates like mad. I increase a little on the pot again and find a new sweet spot without the rotor decelerating, its still spinning really fast. Anybody that can explain what is happening and why it suddenly accelerates and finds a "new balance"?

    This seems like a powerful machine already and I still have four strands on each coil to connect... It spins really fast so maybe I should get a bigger rotor and more magnets.

    The coils are AWG 20 (trigger also) and I'm using 2N3055 transistors.

    And: A big thanks to Peter and Aaron for the Bedini Beginners- and Intermediate sg handbooks! Very interesting, informative and well-written. Thanks!

    Thomas

  2. #2
    Hi again!

    Connected the rest of the strands so I now have three coils with 5 power strands each, and one trigger on one coil. All coils are 6 strands so I left two to experiment with -- light up a led or something :-)

    The strange behaviour mentioned above disappeared. So now I'm desulphating a couple of big old UPS batteries. It takes time -- slowly the batteries hold more and more charge. The machine is not optimal (AWG 20 on both trigger and power and 2N3055:s, could not afford 15 MJL:s). Any comments on this configuration, anybody? Would appreciate advice on the desulphation also. Attach a picture of the setup.

    DSC_0344.jpg

    Thomas

  3. #3
    Senior Member Tom C's Avatar
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    Quote Originally Posted by Shofar View Post
    Hi again!

    Connected the rest of the strands so I now have three coils with 5 power strands each, and one trigger on one coil. All coils are 6 strands so I left two to experiment with -- light up a led or something :-)

    The strange behaviour mentioned above disappeared. So now I'm desulphating a couple of big old UPS batteries. It takes time -- slowly the batteries hold more and more charge. The machine is not optimal (AWG 20 on both trigger and power and 2N3055:s, could not afford 15 MJL:s). Any comments on this configuration, anybody? Would appreciate advice on the desulphation also. Attach a picture of the setup.

    DSC_0344.jpg

    Thomas
    wow impressive buld with locally sourced parts!!! what are your base resistors? have you tried running 470 ohms with no potentiometer? I assume you are running in attraction mode? if you have a 2 channel scope you might get better performance my making sure the coils are perfectly at 120 degrees.
    Tom C


    experimental Kits, chargers and solar trackers

  4. #4
    Thanks Tom!
    Base resistors are 100 ohm. I can put in a 470 ohms resistor but I really like the idea to be able to fine tune with the pot. Can you explain what will be the advantage with the 470 ohm resistor? I think I'm running attraction mode -- must admit I'm not sure. I'll check. I have no scope, but I'm thinking of rigging my computer with a software scope. /Thomas

  5. #5
    Senior Member Tom C's Avatar
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    the potentiometer will drift. JB reccomends 470 ohms on the base and sometimes a 12 ohm final for single coil units. if you wound according to Aarons SG book you are in attraction mode.

    Tom C


    experimental Kits, chargers and solar trackers

  6. #6
    Hello,
    How do you switch the battery pack (primary),
    the battery charge,
    the three groups of five transistors.
    What are your results?
    The primary battery is it always charged when the battery charge is loaded.
    Could you send us a diagram (drawing)?
    Thank you to answer me.
    Regards


    Bonjour,
    Comment commutez vous la batterie d'alimentation, la batterie en charge, les 3 groupes de 5 transistors ?.
    Quels sont vos résultats?
    La batterie d'alimentation est-elle toujours chargée lorsque la batterie en charge est chargée.
    Pourriez-vous nous envoyer un schéma?
    Merci de me répondre.
    Cordialement

  7. #7
    [QUOTE=intactsaphir;9971]Hello,
    How do you switch the battery pack (primary),
    the battery charge,
    the three groups of five transistors.
    What are your results?
    The primary battery is it always charged when the battery charge is loaded.
    Could you send us a diagram (drawing)?
    Thank you to answer me.
    Regards

    Hi!

    Didn't quite understand all your questions but here are some info:

    I have two 12 volt 72 Ah batteries as primary. I switch between them as they run out and charge the one I'm not currently using with a conventional charger.

    I'm desulfating a couple of bigger UPS batteries one at the time. The result I'm seeing is that they hold more and more charge and the specific gravity of the electrolyte gets better. But it is a sloooooow process!

    You find a diagram of my setup in Peter Lindemann's and Aaron Murakami's Complete Beginners Handbook page 9 the lower diagram. I recommend you to get that handbook and the Intermediate if you don't have them. They highly informative and very well written.

    And a note: As you can see in the picture I don't have any neon bulbs between collector and emitter, so I'm very careful not to run the machine without charge battery connected.

    Hope you got same answers.

    Regards Thomas

  8. #8
    Senior Member Faraday88's Avatar
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    Hi Shofar,
    Your build looks very immpresive, including the Coil windings, if you want faster Desulfation, please increase the number of coils, and do a uniform interval of Charging and discharging of the Battery to be reveived.
    use a modrate load resistor/Lamp and use the same every time you cycle the Battery.
    use a steady power supply as the input to the machine..
    Rgds,
    Faraday88.

  9. #9
    Hi Faraday88,

    Thanks for your advice. I am doing uniform intervals, but I'm wondering how high on charge and how low on discharge I should go on the battery. Do you have any experience in that?

    The battery is a 12 Volt PowerSafe GLS Plus C10 62Ah. I discharge it with an inverter driving a 220V lightbulb. It draws 8-9 amps -- is that too much?. I can use a car light instead -- will draw 4-5 amps.

    When charching this way with a Bedini, is there really any danger at all that the charge battery goes too high in voltage while charging?

    Thomas

  10. #10
    Senior Member Faraday88's Avatar
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    Hi Shofar,

    There is no 'how high' as far as the Bedini method goes, a Given Battery servos itself to the system Coils however, its a matter of getting the Battery Impedance
    as close as possiable to the coil Impedance (you keep one fixed then the other servos to the first). on the discharge front Bedini recommands C20 discharge rate to see the performance of gain in the batteries. do not discharge a battery at a rate greater than this please..
    comming to your question on 'How Low' which load to use, its all the same its again Impedance translation, so does not matter if your are usnig a 12v Lamp directly or using a Higher Voltage Lamp to be driven using an Inverter.
    Rgds,
    Faraday88.

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