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  • Joit
    replied
    Hello,
    you can try to put a Resistor or a Pot in Serie with the 12V Bulb.
    This Fan doesnt trow much Amps, so it should work easy, to adjust the Bulb.

    Leave a comment:


  • Bodkins
    replied
    Originally posted by jointbk View Post
    Hi every body
    thanks to every single one
    I think it is the charging/discharging batterie problem. I hope so .
    My biggest problem is that I live in europe and there is doesn't exist a 120V neon Bulb. Only a 12V or 220V. one goes on before The fan is running and doesn't alow it to run. The other from 220V doesn't glows!

    I thaught that if I would take 10*12V connected in series it would work but it doesn't glow

    some one has an Idea?

    If someone find a solution this would be great
    send me your address will post some!(private message)

    Leave a comment:


  • jointbk
    replied
    Thank you ! :-)

    Hi every body
    thanks to every single one
    I think it is the charging/discharging batterie problem. I hope so .
    My biggest problem is that I live in europe and there is doesn't exist a 120V neon Bulb. Only a 12V or 220V. one goes on before The fan is running and doesn't alow it to run. The other from 220V doesn't glows!

    I thaught that if I would take 10*12V connected in series it would work but it doesn't glow

    some one has an Idea?

    If someone find a solution this would be great

    Leave a comment:


  • Bodkins
    replied
    Originally posted by jointbk View Post
    All right so what can I do to make it work?
    change the fan? change the batteries?
    but imhotep used also a 12V 7Ah batterie.

    my fan is a 12V 0,11A is it maybe not enough? Should I take a bigger one?


    This makes me realy sad I thaught I had it, it was running but just like a normal fan. no overunity.

    Well I will try it with a bigger fan and then I will see what will happen.

    If you have any Idea what I could do just let me know
    Thanks for your help and I hope Imhotep is all right?
    YouTube - Bedini and Teal demonstration
    check your fan connection i think its the wroung way around?
    Imhotep it fine he has to work twice the hours for the same pay hes real busy dont worry
    take care good luck
    Richard
    x

    Leave a comment:


  • Bodkins
    replied
    Hi el-tigre
    I would love to buy one but not at the moment.
    Cash but please hold one or two for me give me a month I need to get a function genertor first and some other thing for a project im doing.
    Man they do sound nice
    I bet these a gail blowing in your house
    Take Care
    Talk to ya soon
    Love and light
    Richard

    Leave a comment:


  • el-tigre
    replied
    [QUOTE=Bodkins;50818] el-tigre where did you get the big fans from? and what do you use as the load?

    and jointbk you need to condition the batterys with lots of charge discharge to get OU, when i say lots 20-30+.

    I agree on the cycle rate numbers above. To desulfate my diesel tractor battery took 27, 12 hr charge/drain cycles. It holds a charge nicely now so the fan unit just saved me about $150 as I would have bought a new heavy duty battery. I am currently working on my commercial lawn mower battery now.

    My fans are metal body, 145mm diameter 48v dc brushless 0.45amp NMB model 5920pl-07w-b40 made in USA by Minebea co. ltd. They weigh 735gms. Large enough to glue the electronics package to the housing for easy portable use.

    I got them on an overstock sale. They are very robust with 4 large coils and excellent large ball bearings. The metal body makes it a little more difficult to modify them into Bedini rotors but can be done if you are handy with a dremel cutter or milling machine. These units run very cool and very reliably. The batteries I am charging/conditioning are standard automotive wet cell 12 volt 300-500CCA. The supply I use is a small wall transformer of 500ma @ 12 volts. They will run on 14v NiCd drill batteries or 12v lead acid with no trouble. These units run very reliably for weeks at a time only stopping to drain the charge battery.They start with a gentle fingertip push in either direction. They draw 50-80ma. while charging and can max out at 250ma if allowed to run ungoverned. They will turn reliably as low as 20ma. You do need extra resistance in the circuit to about 40,000 ohms. I use 2 pots in series one is 40k and one is 5k so I have a coarse and fine adjustment and this works well but you get much better speed control if you mount a physical load on the fan blade hub. In my case I used a stiff plastic sheet about 6" high, 1/16" thick and as wide as the blades which acts as a speed govenor, the faster the fan turns, the more air it has to push aside. Best charge rate happens at about 150rpm. They have enough torque, way more than a standard bedini rotor, that I am definately going to mount a small generator as a load instead of more fan blades on my next one. Are you motorheads salivating yet??

    I have about half a dozen of these fans left, all are new, if anyone wants to buy one for $35 plus shipping. I will wire the coils up for you and test it for an extra $30 (you supply your own Bedini circuit). Just let me know. Digikey sells them in lots of 10 for $46 each plus shipping etc.

    Leave a comment:


  • Bodkins
    replied
    el-tigre
    great advice the sweep spot is a bugger, I have a 24 volt fan funning on 12volts YouTube - Fan SG Bedini
    this is a video i did from lidmotor but it may help jointbk
    el-tigre where did you get the big fans from? and what do you use as the load?

    and jointbk you need to condition the batterys with lots of charge discharge to get OU, when i say lots 20-30+. if el-tigre has a place to get the big fans we may do it together?

    Take Care
    Richard


    also look at this thread it can open a hole new door of possiblitys.

    Leave a comment:


  • el-tigre
    replied
    [QUOTE=jointbk;50430]All right so what can I do to make it work?

    I have been experimenting with the fan unit for some months now and I have found that they need to run much more slowly than regular Bedini machines. The fan units tend to start up quickly and overspeed which stops the high voltage output to charging battery completely. I have had to add another large upright blade to the fan to keep rotation speed down and current draw to about 60 ma. on the larger unit I am using to desulfate my tractor batteries. Best charging rate happens when fan is turning just above stall speed and you can actually hear the unit is almost in self osicillation. Under these conditions, the neon will flash brightly and distinctly and the voltage on the charge battery rises rapidly. Even a small amount faster rotation causes the neon to flash almost constantly and charge rate slows dramatically. Any faster rotation than that and the neon does not flash which indicates no high voltage spikes going to charge battery at all.

    I have found that it is impossible to use a variable resistor to tune down the rotation speed of the large fans slow enough to get charging to work. You actually have to add a mechanical load in addition to fine tuning with the pot. I have also found that counter clockwise rotation makes my fan easier to control as it overspeeds much easier when running in a clockwise rotation.

    Keep trying.

    Leave a comment:


  • sucahyo
    replied
    You have to remember that the device purposes is not for overunity. It is for charging battery. See if you have some voltage between the collector and source positive. Also, like you notice, if you have small current running, you will get small current for charging. To get real charging, you need decent current.

    Leave a comment:


  • jointbk
    replied
    :-) Thanks ?

    All right so what can I do to make it work?
    change the fan? change the batteries?
    but imhotep used also a 12V 7Ah batterie.

    my fan is a 12V 0,11A is it maybe not enough? Should I take a bigger one?


    This makes me realy sad I thaught I had it, it was running but just like a normal fan. no overunity.

    Well I will try it with a bigger fan and then I will see what will happen.

    If you have any Idea what I could do just let me know
    Thanks for your help and I hope Imhotep is all right?

    Leave a comment:


  • Bodkins
    replied
    hi jointbk
    Imhotep not been around for some time, so I will try and help, can you get it to charge a little 9volt?
    or put a cap on the backend and see if you get a charge, it may be the impedance, you are using big batterys.

    Take Care
    Bx

    Leave a comment:


  • jointbk
    replied
    Hello,

    I have folowed the Imhotep videos since quite a long time.
    I come from France, but since I discovered your video Step by Step, I was like obssesed by the bedini circuit. I have distroyed a lot of fans (maybe 7) but researching more on the internet I finaly found the missing parts. ( translation for ecg125, neon bulb, and coil wrap,...) AND THE FAN RUNS!!

    But strangly I don't have the same results as you have!
    my Batterries d'oent load herself up?
    but why? I don't no everything is new so nothing is broken
    I realy don't know what to do please help me!!
    Attached Files
    Last edited by jointbk; 03-29-2009, 11:48 AM.

    Leave a comment:


  • sucahyo
    replied
    5Hz = hot, 2KHz = cold

    My recent observation on my circuit.

    After my transformer failed, I have problem of finding a coil that can be turned on for hours. Using car coil or self made coil will make the transistor very - very hot in a few minute. I already try lowering the duty cycle, but it still get hot.

    It turn out that the key is higher frequency and low duty cycle.

    See attachment.
    If VR set at 50K, the frequency is around 5Hz, the transistor will get hot in seconds.

    If VR set at 1K, the frequency is around 2000Hz, the transistor remain cool .

    The picture is my new transformer with 0.8 ohm resistance being switched. One wire neon bulb, top part slightly lighted up, is attached to 185 ohm part.

    Even when the power is strong enough to do one wire lighting, the transistor and transformer remain cool .
    Attached Files

    Leave a comment:


  • dambit
    replied
    I'm not sure about a fan setup, but with a normal SG charger if the neons light up while the load is connected, it is usualy because the battery is damaged or heavily sulfated. However you have said that you are trying something different so it could be anything.

    (Not sure if I was much help. )

    Cheers,

    Steve

    Leave a comment:


  • ABCStore
    replied
    The neon that protects the transistor, between C and E. The relay is just in line with the running battery, self-oscillating. The system appears to be producing HUGE spikes and LOTS of them... Will try to check today.

    ABC

    Leave a comment:

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