STEORN DEMO LIVE & STREAM in Dublin, December 15th, 10 AM

[PaulLowrance]

Yes, that is "the" John Bedini.  And if you take another look at that video, he does not say "micro amps"...  He says "micro watts".  It could have been 130 mW before the iron was introduced.  But after he introduced the iron to the core, his current meter bottomed out, showing what appears to be LESS THAN 1ma.  How much less I don't have a clue.  If you figure in all the factors a bit, his statement of "micro watts" seems to hold pretty true as far as I can tell.  Anyone who can run a motor with that much speed, on less than 1ma, has got a pretty good idea of how these things work.

Don't get me wrong, I'm not bashing steorn.  I just love to see John get involved.  He knows more about building efficient motors than most of us will ever know.  His input certainly could help us figure all this out.

No, if you read my comment I said that it's ~ 10mA *after* he puts the metal rod in the coil. Before he puts it in it's 100mA, ~ 1.3 watts. Read my previous post for details.

[penno64]

Hi Guys,

What circuit for switching is JB refering to - BI POLAR Switch ?

I would like to, if possible, replicate this setup.

Kind Regards, Penno

[captainpecan]

No, if you read my comment I said that it's ~ 10mA *after* he puts the metal rod in the coil. Before he puts it in it's ~ 1.3 watts. Read my previous post for details.

I'm sorry, I still am not seeing what you are meaning.  How are you getting 1.3 watts out of 13v and 10ma before he inserts the iron?  My calculations say that is .13 watts, or 130mW.  Then after the amp meter drops to nothing, basically meaning less than 1 ma or so.  If it was 1 ma at 13 volts, that would be .013 watts, or 13mw after the iron was inserted.  I am assuming it was LESS THAN 1 ma, but we cannot tell for sure.  If so, that is not far from hitting the microwatt scale.

I am not seeing how you are getting 1.3 watts?  Am I looking at all this wrong, I don't think so.  But feel free to feed me some crow if needed, lol.

(EDIT)...  I would prefer my crow cooked slightly before I eat it... lol...  I just noticed I looked at the amp meter wrong. 

[captainpecan]

Hi Guys,

What circuit for switching is JB refering to - BI POLAR Switch ?

I would like to, if possible, replicate this setup.

Kind Regards, Penno

I believe he is referring to using alternating magnets to trigger.  Using both north and south pole triggers, as in his window motor circuit possibly.  I'm by far not an expert, I've just built a couple to learn from.  Some else may be able to clear that up better for you.

[tak22]

not really caring where I get my info from .... 

edit: this is NOT me talking, clue is in line 1 ....

Memo from a non-builder (MH) to the builders:

About those pesky toroidal coils....  The most basic test that you want to be doing is checking how much current you need to saturate your core for your particular toroidal coil configuration.  To my non-amazement, I have seen zero discussion about this incredibly important topic.

For a given core we know that at a certain point it will be 100% saturated.  To saturate the core you can play with two variables, the amount of current going through your coil, and the number of turns of wire in your coil.  Amperes x turns = "amp-turns."

For a given core a certain number of amp-turns will saturate it.  Therefore high current times a few turns would be equal to low current times a lot of turns.  The more turns you add the higher the resistance of the coil.  The more turns you add the higher the measured inductance of the coil up until you saturate the core.  The more turns you have, the lesser the required current to hit the saturation point.  After the core is saturated for either case (low or high number of turns), then the inductance looks like a normal air-core inductor, where it is proportional to the square of the number of turns in your coil.

So how do you test the toroidal coil to know that it is saturated?  Simple, you connect it to a variable power supply and vary the voltage while you check how must attraction you feel with an external magnet near it.  The point where the attraction drops to its lowest point is your saturation point.  Make a note of the voltage/current required to saturate your coil.

Probably most replicators are using a fixed 12-volt power supply and they are over-saturating their coils for no reason.  It simply represents wasted energy.

For those replicators that have variable bench power supplies, then they can adjust their power supplies to the right voltage after making the proper measurements on their toroidal coils as outlined above.  For those replicators that are real keeners with bench power supplies, what they can do is set up their power supplies as current sources instead of voltage sources.  They can simply dial up the correct amount of current to go into their coils.  This will give their motors a slight advantage in that the core will "disappear" just a little bit faster than if they set up their power supply as a voltage source.

So I hope that was a good lesson for all of your builders.  Every toroidal coil you build has a certain saturation current value that you can measure.  There is a very good chance that a 12-volt supply will be overkill for your toroidal coil and your best bet is to use a variable current supply to energize the coil, and using a variable voltage supply is almost as good.

tak