Selfcharging cap circuit from Larskro fake or real ?

[Farmhand]

Until i see the capacitor voltage go above the initial measured battery voltage in Larskro's clips I will consider it to be the same as the effect seen in Lidmotor's clip, that seems to be that with loop off the motor is very inefficient (no recycling of applied power) and with the loop on it is very efficient (the unused applied power is recycled). Those factors (assuming very low input power when in the efficient loop mode) coupled with dielectric absorption, could cause the effect, surely if the circuit is left with the battery in place and the loop closed it should self charge the battery, if the effect is real.. Also if the effect is no different to Lidmotor's but less pronounced then the capacitor voltage will not rise above the original measured applied battery voltage.

He needs to show better evidence if he wants me to believe him. And he should have no issue with providing it if the device is really self running and he wants more people to believe him.

Cheers

In my opinion Lidmotor's video clip replication shows the effect has a conventionally explainable cause. I have little doubt that any replication will show the same effect as Lidmotor did with differing degrees of the effect.

If I had a super cap I would try to show the effect using a different method, I'll order some, I want some anyway.

Is a 0.47 F super cap more like regular low capacity electrolytic capacitor or does it behave in some ways like a battery under load where the voltage can dip under initial load then rise as the chemistry catches up. Is that a kind of hysteresis ?

..

Many of us know that when we run a pulse motor recycling the coil discharge that is running efficiently, if we then simply open circuit the flyback diode the motor will run much less efficiently. As far as my memory serves me this is true. Correct me if I'm wrong, does anyone run a pulse motor with the flyback diode open circuited ? Unless running it near resonance.

[d3x0r]

Good lucke with your faucet generators you get
Home depot had these


The generator screwed out of the casing pretty easily; but the generator casing and circuit board are quite tightly sealed.  I tried to pry away the edge where the coils attach to the existing board, and solder there; but the points to solder are pretty small, and not enough structure to hold the wires...

it is a fairly strong (neo) magent, and it is wound kind of like a newman;bedini window motor coil ...

I did have it spinning with the basic circuit and a reed switch   but then I moved it and the leads broke off again.

[hartiberlin]

When taking again a look at Lidmotor´s video , Lidmotor  still drew power for his 2 LEDs...!

So it could be that his voltage is not climbing, cause the 2 LEDs from his coil are still using up too much power.

He should try  without these 2 Leds and let us know, if the voltage will rise then to higher levels than the battery voltage.
Many thanks.
Regards, Stefan.

[gyulasun]

Is a 0.47 F super cap more like regular low capacity electrolytic capacitor or does it behave in some ways like a battery under load where the voltage can dip under initial load then rise as the chemistry catches up. Is that a kind of hysteresis ?

Hi Farmhand,

A supercap I think behaves like a lower value electrolytic capacitor wrt the so called "memory effect": when you discharge it (mainly suddenly rather than slowly) then the particles of the dielectric material inside it tries to "remember" the earlier electric field what influenced them in the charged up case.  You can see how a 25 Farad supercap behaves after discharging it with a screwdriver here:
https://www.youtube.com/watch?v=fiILAyxU5tc   
The voltage recovery in this cap is around 350 mV in a few hours when discharged to about 5.4 mV from 1.74 V.  In the comments under the video there is good info on a 500 Farad cap similar behavior too.  How much voltage recovery is received depends on mainly the original voltage level and leakage current of the cap (self discharge). I found even a 10 -11V recovery in a 220 uF 350V capacitor when discharged from about 320 or so volt with a heavy, thick piece of wire.

Gyula

[Vortex1]

The benefit of the doubt is kind, but when one has faked in the past, there is no reason to believe they are now coming clean.

I suggest that a small coil under the base operated at some higher frequency is charging the large cap by induction into the motor windings during the opening of the reed relay. This HF is rectified via the Schottky diode.

When the reed closes some of this accumulated charge gives the motor a kick.

The cycle repeats.

Maybe someone already covered this.