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  • #1

    The Underground Lab


    New website for my bedini projects... was going to start a blog, but thought I might as well build a website.

    Still got more to add to it including the Solid State section and a section on the conditioning process, but the basics are there. The "Current Projects" sections is basically a diary of the two projects I'm working on at the moment; my SSG Motor Generator, and my chunky solid state oscillator (@Aaron, I went with the name "Fat Boy" for this one ) I'll gradually add more content as I have time.

    and if anyone has any suggestions for the Links page I'm all ears

    MG-1


    "Fat Boy" Oscillator (with OCD Module)
    Last edited by Sephiroth; 07-11-2010, 07:16 PM.
    "Theory guides. Experiment decides."

    “I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success... Such emotions make a man forget food, sleep, friends, love, everything.”
    Nikola Tesla
    Tags: None
  • #2
    Underground Lab

    Looks good!

    V.
    'Get it all on record now - get the films - get the witnesses -because somewhere down the road of history some bastard will get up and say that this never happened'

    General D.Eisenhower

    http://www.nvtronics.org

    Comment

    • #3
      Originally posted by blackchisel97 View Post
      Looks good!

      V.
      Thanks blackchisel97

      I'll hopefully have some interesting results to report soon but until then I'll just fill it with what I know so far

      Enjoy!
      "Theory guides. Experiment decides."

      “I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success... Such emotions make a man forget food, sleep, friends, love, everything.”
      Nikola Tesla

      Comment

      • #4
        Cool website
        Answers a lot of questions I had!
        Can you post a better diagram on the ocd circuit
        It is difficult to read the text on the website
        Last edited by nvisser; 09-07-2009, 11:01 AM.

        Comment

        • #5
          I noticed that the suggested core diameter should only be 25% of the thickness of the winding. I am using empty solder bobbins and the core is about the same as the windings. Can that create unnecessary drag when used as an energizer coil like in the bedini FEG

          Comment

          • #6
            Originally posted by nvisser View Post
            I noticed that the suggested core diameter should only be 25% of the thickness of the winding. I am using empty solder bobbins and the core is about the same as the windings. Can that create unnecessary drag when used as an energizer coil like in the bedini FEG
            I wouldn't say that precise percentage is neccessary.

            The magnets on the rotor should ideally be at least the same diameter as the core so around 25% - 50% diameter is a bit better than the relatively huge core diameter of a brooks coil configuration...

            more important is that the cross section of the coil windings should be as square as possible for maximum inductance for the length of wire.

            Using a wider core will also give you a higher Q so your bobbin should be fine as long as your magnets are big enough.
            "Theory guides. Experiment decides."

            “I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success... Such emotions make a man forget food, sleep, friends, love, everything.”
            Nikola Tesla

            Comment

            • #7
              Originally posted by nvisser View Post
              Cool website
              Answers a lot of questions I had!
              Can you post a better diagram on the ocd circuit
              It is difficult to read the text on the website
              If you click on the image it will bring up a bigger version of that image

              http://www.theundergroundlab.org/ocd-circuit.jpg
              "Theory guides. Experiment decides."

              “I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success... Such emotions make a man forget food, sleep, friends, love, everything.”
              Nikola Tesla

              Comment

              • #8
                OCD circuit

                Originally posted by Sephiroth View Post
                If you click on the image it will bring up a bigger version of that image
                http://www.theundergroundlab.org/ocd-circuit.jpg
                It looks like a solid state ssg with only the 10k missing between the base and emmitor of the transistor. Is the protection diode not necesary between base and emmitor ?
                Is there any reason why you use a 3rd winding for the charging instead of charging straight from the "drive coil" ?
                Last edited by nvisser; 09-07-2009, 01:25 PM.

                Comment

                • #9
                  Originally posted by nvisser View Post
                  It looks like a solid state ssg with only the 10k missing between the base and emmitor of the transistor. Is the protection diode not necesary between base and emmitor ?
                  Is there any reason why you use a 3rd winding for the charging instead of charging straight from the "drive coil" ?
                  It is a solid state oscillator the important bit is the 4060 timer circuit that regularly switches the batteries from being charged to discharged for the conditioning process.

                  The third winding isn't important... infact, I don't like using recovery windings if I can avoid it... You can use any solid state device as long as it self starts.

                  The resistor between the base and the emitter is just to prevent thermal runaway if the base current gets too high which will cause the transistors to heat up. If your transistors stay cool without the resistor then it isn't neccessary for your set up.

                  I have compared the wave form with and without that resistor, and its addition definitely reduce the amplitude of the spike.
                  Last edited by Sephiroth; 09-07-2009, 01:41 PM.
                  "Theory guides. Experiment decides."

                  “I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success... Such emotions make a man forget food, sleep, friends, love, everything.”
                  Nikola Tesla

                  Comment

                  • #10


                    Success!!!



                    Motor section of the MG-1 is complete and works even better than I thought it would. I ended up using 22 gauge wire for the stators and wired each side in series so there are 5 coils in series on each side of the rotor.

                    For some reason it doesn't like working with multiple transistors so that beautiful circuit I put together has been scrapped and it is operating off just one transistor. Odd thing is that my True RMS meter says it is drawing 650ma, though that is 3 times more current than I would normally use per transistor, yet the transistor is cold.

                    So, top speed is 6000 RPM (confirmed with my tachometer) with single pulses while drawing 650ma (according to my True RMS meter) at around 12.5 volts. Which makes it about an 8 watt motor.

                    I believe it is incredibly efficient for an SSG. I have yet to measure the mechanical output but the Back EMF voltage EXCEEDS the input voltage, which I didn't think was possible... makes a very interesting wave on my oscilloscope.

                    I will upload photos and a video tomorrow.

                    Bedini SSG (MG-1) : The Underground Lab

                    "Theory guides. Experiment decides."

                    “I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success... Such emotions make a man forget food, sleep, friends, love, everything.”
                    Nikola Tesla

                    Comment

                    • #11
                      oh, alright then... you've twisted my arm.

                      Here is the scope shot



                      "Theory guides. Experiment decides."

                      “I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success... Such emotions make a man forget food, sleep, friends, love, everything.”
                      Nikola Tesla

                      Comment

                      • #12
                        Video uploaded

                        YouTube - MG-1 : Pulse Motor Generator (SSG)
                        "Theory guides. Experiment decides."

                        “I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success... Such emotions make a man forget food, sleep, friends, love, everything.”
                        Nikola Tesla

                        Comment

                        • #13
                          ..the Back EMF voltage EXCEEDS the input voltage..
                          Thats an effect you get from driving both sides of the coil with magnets. The coils probably don't fire until the magnet is on the exit side of the coil. So you are precharging the coil.
                          If the system were closed loop this might be a problem, but in an open loop the precharged energy in your coils runs serial with the battery.
                          So your potential is stepped up.

                          I like that little motor, it nice..

                          Cheers
                          Matt

                          Comment

                          • #14
                            Originally posted by Matthew Jones View Post
                            Thats an effect you get from driving both sides of the coil with magnets. The coils probably don't fire until the magnet is on the exit side of the coil. So you are precharging the coil.
                            If the system were closed loop this might be a problem, but in an open loop the precharged energy in your coils runs serial with the battery.
                            So your potential is stepped up.

                            I like that little motor, it nice..

                            Cheers
                            Matt
                            Glad you like it I've been told the maximum mechanical efficiency you can expect from an SSG is 28% so I'm trying to beat it

                            Should be able to finish the generator side in the next week or two.

                            @All
                            Just to give you an idea of how fast this thing actually is, the coils are firing with single pulses at 500hz... that is 500 pulses per second!
                            "Theory guides. Experiment decides."

                            “I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success... Such emotions make a man forget food, sleep, friends, love, everything.”
                            Nikola Tesla

                            Comment

                            • #15
                              Hi Seph,

                              Nice motor.....

                              I look forward to see how the generator does under load........

                              What is your shaft size?

                              May I ask why you went with many small coils in series and on both sides of the rotor?

                              Are all the coils in one series or is front side one series coil and the back side a seperate series coil?

                              Also, how do you trigger the motor? Would the SSG circuit for multi coils work?

                              Anyway.... nice job!

                              I look forward to more pictures and videos.......

                              Tj
                              Last edited by tjnlsn255; 09-13-2009, 07:04 PM. Reason: add question about triggering....

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