Almost complete charger

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Uploaded by on Mar 10, 2009

A short vid showing the progress on my 20 circuit solid state Bedini charger.

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Uploader Comments (SJohnM81)

  • Hey man, beautiful setup you have there. I'm guessing you are done with the whole rig by now, how is it working? i've always wanted to mess around with a SS bedini circuit.

  • It's been complete for a little while now. It works very well but I have blown ten of the transistors. So annoying and not all that cheap to repair at $12 a piece. Because the device is so powerful neons can't protect the circuit like they can with a normal SG. Within a few seconds of removing the output cables while it is on the smoke appears!

  • Beautiful work - you seem to be getting a very good charge rate too! Did I hear you correctly - did you say that the base diode was removed to get the trigger to self-oscillate like that? - best regards...

  • Thanks, you heard correct. There is no base/emitter diode as well as no cores in the coils. I'll post a quick vid showing a scope shot and circuit diagram soon.

  • Yes i noted the exact same thing about the neons it seems all energy is pulled out from the coil.... I think the coil acts like a transformer.

  • I'm not sure but it could be because they are on the same spool. I would like to try it on a multi-coil but I don't want to risk blowing all the other transistors. Too much soldering to fix it :-)

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All Comments (9)

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  • I haven't seen the circuit. But taking the diodes away from the transistor could be why they are failing. The diode helps protect the transistor in the normal Bedini circuit.

  • that's unfortunate! i still have my old ssg coil so i think i'm going to try the circuit out. ever think about using a compact florescent instead of a tiny little neon for protection? just a thought, may or may not work lol keep up the good work, cheers man.

  • About your PWM... I'm wondering if you've burnt out a track?

    Can you test each track for conductivity?

  • Great work SJohn, its been a while.. u should do more clips, you've got some great builds.

    Id love to see a circuit of this. Im trying to get a multicoil system working with my joule thief (check out my vids)

    I can charge SLA Batteries but it struggles on larger car batteries.

    Have u scoped it to see how high the HV spikes are?

    Bummer about your PWM - is that one of those $90 jobs from Jaycar... They have cheaper $20 ones set at 2kHz (but u can mod it)

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