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Thread: Ron Cole's Bipolar Switch

  1. #71
    Were you trying to produce AC with this one?


    Quote Originally Posted by Deuis View Post
    This was my effort at a Tesla Switch with brushes.
    Driven by an independent universal motor doing up to 25,000 RPM's.
    The segments on the commutator can be soldered to fit many different frequencies.
    Alas very little testing was done before my break.


    Attachment 5635Attachment 5636Attachment 5637Attachment 5638

  2. #72
    To be honest I cant remember, might be a typo.
    Three years ago i put it down and haven't touched it since.
    With a new workshop being completed it will be soon time to bring them out once again.
    Problem I had with this machine is how to tune it, unless there is a simple way to find the resonance i need.

    Quote Originally Posted by min2oly View Post
    Were you trying to produce AC with this one?

  3. #73
    Quote Originally Posted by Deuis View Post
    To be honest I cant remember, might be a typo.
    Three years ago i put it down and haven't touched it since.
    With a new workshop being completed it will be soon time to bring them out once again.
    Problem I had with this machine is how to tune it, unless there is a simple way to find the resonance i need.
    I see, you can loose the diodes and caps if you do it like this:
    https://youtu.be/KVdvvPDlagw?t=4m2s
    there should be one more cap after the FWBR size depending on load...

  4. #74
    If I remember the load was the universal motor.
    This setup if fully mechanical, the switching is soldered into the commutators - no relays.
    I will have to look back into why i designed the circuit that way.
    I think the caps were there to minimize sparking on the commutators while also drip feeding back through the circuit.

    Quote Originally Posted by min2oly View Post
    I see, you can loose the diodes and caps if you do it like this:
    https://youtu.be/KVdvvPDlagw?t=4m2s
    there should be one more cap after the FWBR size depending on load...

  5. #75
    Senior Member Faraday88's Avatar
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    Quote Originally Posted by John_Koorn View Post
    This thread is for discussing Ron Cole's Bipolar Switch from 1989 that was posted on John Bedini's web site.

    Few questions spur in my mind...
    1) John Bedini in his website did mention that he never used this circuit and also that there is something not correct about it! My immediate guess is about the 10 k pot in the emitter circuit of the 'Discharge -Transistor" why would you need a pot that high here??
    2)The duty cycle control is not shown between(pin 6&7) of the 555 chip, it is essentially high ON time and Low -OFF time square wave.
    3)There is an optimum value of the Resistance of the load for the circuit to work as per its principle.
    4) The frequency is also critical as this changes with the given size of the battery.
    5) How did Bill Nelson use Microwave frequency to this circuit? how is that a Cap as large as 30,000UF finds Resonant tuning at microwave Frequencies??
    Rgds,
    Faraday88.[/QUOTE][/QUOTE]
    'The Magnetic Field is the gatekeeper of the Wheather on the Earth'' - John Bedini.

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