Selfcharging cap circuit from Larskro fake or real ?

[hartiberlin]

Okay, in the 7th video he said now,
that he used this generator:

http://www.ebay.com/itm//261210903782

and now also corrected the SMD to 10 uF / 25 Volts.

25 Volts type I did not find on Ebay.com

only 10 Volt types

http://www.ebay.com/itm/300915920797

Regards, Stefan.

[hartiberlin]

Be cautious with the Temperature rating.

X7R are the very linear caps.

This:
http://www.ebay.com/itm/300915920797
has alreay the better nonlinear Y5V temperature ratings..

You can also try to get Z5U.

I will try to ask Larskro which one he uses..

Regards Stefan.

[hartiberlin]

Some have asked how this motor can at all turn,
when the Reed Switch is only pulsing the coils.

Well I really think, this generator is only one coil
with a very strong magnet inside.
You can see, that it is very strong, as Larskro approaches the
other shower head the motor already begins to rotate a bit into position
of the field the other shower head forces upon him...
So just pulsing it shortly from the caps or batteries makes the
magnet rotor probably spin pretty fast already and then the reed switch is also
controlled by the magnetfield of the rotor, so the reed switch opens and closes
at exactly the points, where it propells the magnet rotor.
The other 2 magnets on the wood plank are only there for
premagnetisation of the Reed switch so it better opens and closes
with less flux change in the air...

So it is really an interesting device.

I hope he does not have any button cell battery hidden below the motor
somehow..
Also he should still show, how high the voltage will climb...

Regards, Stefan.

[ZathEros]

Has anyone noticed the similarities to the Bedini window motor as well as the Keppe motor?

[TinselKoala]

That's right, there really isn't a mystery about how the pulse motor runs, it's a fairly ordinary construction, it just has the coils or rather a split coil surrounding the rotor instead of separate from it.
The mystery of this device is the climbing voltage as it runs, and the report of the rotor accelerating, until he deliberately stops it.

I'm working on a little pulse motor with a Hall effect sensor switching a mosfet to drive the coils. It makes a nice sharp backspike, with somewhere between 8 and 12 times the input voltage. (Input 4.2 volts, spikes collected into a capacitor reach over 58 volts.)

Unfortunately since it's using a mosfet (IRF3205) it needs at least 4 volts to run (mosfet gate threshold voltage) and is not really switching fully until 8 volts input (mosfet fully turning on). This voltage requirement means it won't be useful for replicating Larskro's device.

But I've ordered a set of those LED water nozzle things from Ebay, so I hope to have the right generator/motor in hand in a few days, if all goes well.

Meanwhile here's the circuit for my MiniPulse and a photo of the motor itself.