Coil shorting with Ed Leedskalnin by CoolJoule

[minoly]

minoly, Thanks for sharing that excellent video. A couple questions ... Just curious as you mentioned 'Bolt' is your son. Is that the user 'bolt' that's on Doug Konzen's yahoo group who also goes by the name silvertheau? (sp?). I always enjoy his genius input on how things work. I know that group has covered a lot of info on coil shorting.

Have you tried this with neo magnets? From what I understand neo's are a lot stronger up close but ceramic magnets while weaker can reach further in distance. I've never dug into why that is and it may not be relevant to this method but it's has always baffled me how that can be. I've got both ceramic magnets and neo magnets and can confirm just by feeling the force they have that this is true.

Is your coil core just plain iron wire like garden wrap wire?

That's a different Bolt, you will find some posts of my own back in those threads as well as Romero's threads and speeding up under load. I just never applied it to Ed's coils at that time - nor have I seen anyone else. It's not a huge deal really, I was actually hoping someone else already did some work on it and posted results.

my experiments so far show an increase in watts especially if you can short it several times BTDC.

My focus has stayed with low lenz and a small build. For me it's easier to keep things balanced at this point. I'll stay away from neo's for a while. I would love to see someone that already has the setup w/ large coils, just employ the pulsed shorting. I'd be curious and would bet that their wheel would speed up even more.

It's steel wire, not the iron wire coated w/ that green plastic. I think it's used to hold up pictures? but it's not the twisted kind. All that said, I've had better results w/ the standard Bedini welding rods... I tried using a single solid rod it did not put out as much. too much lenz.

[minoly]

@Minoly

I built this same setup many years ago starting with the reed switch which may be biased with a magnet. Then I found a joule thief(self-oscillating boost converter) circuit worked much better. The gain here is the fact that the current in the coil is lower on average which means the opposing magnetic field (Lenz effect) is smaller. The induced current and it's inherent magnet field are the reason the rotation is opposed.

The best setup was a low power cmos 555 timer driving a small fet to short the coil however unlike the self-oscillating boost converter it must be tuned to the most efficient frequency/time constant for any given rpm.

I found it is much more efficient than a standard generator setup because conversion takes place on the fly in the stator coils and the bridge rectifier is not needed only a single blocking diode.
Less is more in this case.

AC

Man I like the sound of this one. Did you happen to make a vid or have you a schematic?

Thanks,
Patrick A.

Cooljoule.com

[Allcanadian]

@Minoly
I included a picture and the top circuit is a standard boost converter circuit. The Joule thief is simply a boost converter which switches it's transistor on and off with a secondary tickler coil.

The second picture is the circuit I built which is two boost converters and the "supply" has been replaced by two coils. I have shown two coils for simplicity however the two coils can be one single coil using another circuit. The switches are transistors or fet's driven by an external 555 timer.

One side of the circuit switches the current in one direction (magnet approaching) and the other side of the circuit switches the current in the other direction (magnet leaving). They can have a common core because the induced current is not dictated by the coil but by the direction of the magnetic field.

AC

[Allcanadian]

@Minoly
My last post was a circuit I tested many years ago and is from memory however I believe this was the first design of a later circuit found below. I simply twisted the gate wires of two Mosfet's together then twisted the source to drain, source to drain to make an AC mosfet switch. The center of the coil is the common ground for both mosfets and the 555 timer and pin 3 is the output from the 555 timer to both mosfet gates twisted together.

As well I found most full wave recifiers really suck and the rise time was way to slow so I separated the output and used ultra fast low resistance diodes.

AC