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Type: Posts; User: John_Koorn

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  1. Replies
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    Hi Jules, Your measurement method looks sound,...

    Hi Jules,

    Your measurement method looks sound, although I'd go for a 1 Ohm shunt resistor instead of 10 Ohms.

    As far as what my scope shots are showing, all I was really interested in was the...
  2. Replies
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    7,102

    Hi Jules, yes that PWM module is a good bit of...

    Hi Jules, yes that PWM module is a good bit of kit. I just ordered something similar.

    Yes, that's what I meant about cycling the battery - charge, discharge, repeat.

    Here's a couple of scope...
  3. Replies
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    here's a good picture that simulates a coil...

    here's a good picture that simulates a coil (core) in saturation.

    http://www.aplomb.nl/TechStuff/Switcher/SaturationScope.jpg
    For a Bedini SG, where we want to maximise the "ZPE" I'd suggest...
  4. Replies
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    Hi Jules, Further comments embedded below: ...

    Hi Jules,

    Further comments embedded below:



    This has always been a difficult one to explain and not something I fully understand either. My best explanation is that you can't run a pulsed DC...
  5. Replies
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    Hi Jules, very interesting setup you have there...

    Hi Jules, very interesting setup you have there and also very well built.

    My opinions, based on my own experiments are:

    1. It would be more effective to power the generator and the inverter...
  6. Replies
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    Still reading with interest Yaro :D John K.

    Still reading with interest Yaro :D

    John K.
  7. Thread: ssg kit

    by John_Koorn
    Replies
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    330

    Hi John54, Teslagenx sell a 4 transistor...

    Hi John54,

    Teslagenx sell a 4 transistor Bedini SG kit for $120.00. Endorsed by John Bedini...

    http://teslagenx.com/kits/tx-sg4tub.html?category=kits

    John K.
  8. Replies
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    Hi Yaro, it's unfortunate that the rotor is...

    Hi Yaro, it's unfortunate that the rotor is toast. I sincerely hope no one was injured! Rotors can be rebuilt - eyes on the other hand, cannot.

    John K.
  9. Replies
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    Hi Dave, thanks for posting that. I don't...

    Hi Dave, thanks for posting that. I don't remember seeing it before.

    I'm going with 350kHz on Fig.8

    John K.
  10. Replies
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    Hi Cmor, no - not that I'm aware of. John K.

    Hi Cmor, no - not that I'm aware of.

    John K.
  11. Replies
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    Slight correction - JB used 5 matched FETs in the...

    Slight correction - JB used 5 matched FETs in the Bedini Large Comparator... so about 12,000uF per FET

    http://www.teslagenx.com/research/img/tx-comp-lg.jpg

    Picture taken from...
  12. Replies
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    Hi Faraday, It's more like a permanent magnet...

    Hi Faraday,

    It's more like a permanent magnet stator version of the window Bedini-Cole window motor.

    John K.
  13. Replies
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    Hi Jules, Yes, the opto trigger was a...

    Hi Jules,

    Yes, the opto trigger was a different circuit - sorry for the confusion.

    No, the hall circuit (as well as the inductive trigger one) can't be adapted to run with one battery - it's a...
  14. Replies
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    Trigger Coil FET SSG

    Hi Jules,

    Here's a trigger coil version I built. I recall that the trigger coil was a separate single wound coil that was mounted in between the motor coils.

    John K.

    7056
  15. Replies
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    Hall Triggered FET Bedini SSG

    Hi Jules,

    I was going through some old files today and found this one. I hope you find it useful :)

    John K.

    7055
  16. Replies
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    Hi Jules, sorry I don't have a schematic for it -...

    Hi Jules, sorry I don't have a schematic for it - it was a long time ago and I'm not sure where I saved it. Should be pretty simple though, it's a pretty standard Monostable 555 circuit. From memory...
  17. Replies
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    Hi Jules, One method I used was to control the...

    Hi Jules,

    One method I used was to control the dwell time (keeping with the auto reference) with a simple 555 timer circuit in monostable mode. This worked very well when using a potentiometer to...
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    Hi Jules, I've used MOSFETs to do the...

    Hi Jules,

    I've used MOSFETs to do the switching in the past, but while they "worked" I found the MJL21194 much better.

    I agree, you'll never get the inductive trigger to fire a MOSFET, as they...
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    Hi Truth, Are you able to see the scope...

    Hi Truth,

    Are you able to see the scope setting on that picture/video?

    I've seen this on my setups, but I'd need to quantify what you mean by "way negative" first before I can offer any...
  20. Replies
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    Faraday, you should know by now not to comment on...

    Faraday, you should know by now not to comment on stuff you don't understand. :rolleyes:

    Hi Jules, there is nothing wrong with opto or hall switching and it WILL radiantly charge your batteries -...
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    Hi Gary, Yes. I was going to suggest that the...

    Hi Gary,

    Yes. I was going to suggest that the batteries are too big for that SSG. You need to be able to take them up to ~15.8V otherwise you'll slowly kill them.

    John K.
  22. Paul, is that an LED I see between the pot and...

    Paul, is that an LED I see between the pot and the base of the transistor? If so, you need to remove it.

    A bifilar coil with one transistor is fine - you can go to multi-strand coils later on....
  23. meanstack, I don't want to sound mean but you...

    meanstack, I don't want to sound mean but you should've done your research before laying out that amount of money. The fact that you can't work out how Michael explained how he got 4800W tells me you...
  24. Nice RS_, a piece of history in your own garage...

    Nice RS_, a piece of history in your own garage :)

    John K.
  25. Faraday, that's the best image Google gave me....

    Faraday, that's the best image Google gave me. Multiply it by number of cells for your battery :)

    John K.
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