I do not understand how the rotor can turn?

The rotor is in parallel with the coil (not in front of it)?

Greetings, Conrad

I do not understand how the rotor can turn?

The rotor is in parallel with the coil (not in front of it)?

Greetings, Conrad

Hi Conrad,

Larskro wrote under his first video text ( https://www.youtube.com/watch?v=Ln3YVVZbpNo ) that he uses a "motor/gen from a tap-water led light unit".
You surely heard about LED showers where a micro generator is built into the head of a bathroom shower and when using the shower the water pressure rotates the rotor of the generator and there are several LEDs with different colors illuminating the water beams etc.

I found a very similar looking such micro/mini generator at this link:
http://www.alibaba.com/product-detail/water-glow-mini-generator-for-led_361359743.html   

EDIT: I found a mini wind turbine version too: http://easy-taobao.com/taobao/view/id/7844125183

I think the rotor includes permanent magnets only and water pressure turns this rotor, so the induced power in the stator windings can feed the LEDs. Most such mini generators are specified (as I read elsewhere) to give about 5V and 30mA to 100mA current (here is another type: http://www.alibaba.com/product-detail/micro-generator-for-led-shower_361352069.html )

So it is very possible that such generator can work as a motor too, when the stator coils are fed with AC current, in this case pulsed AC due to the reed switch.

So to answer your 2nd question, the coil is the stator coil, and the rotor I think consists of permanent magnet(s) only. He charges up the 0.47F supercap to 1.6V first, then he starts rotating the rotor by his finger and the reed switch starts its ON/OFF sequence and the Schottky diode is supposed to raise the voltage level of the supercap above 3.4V and higher...

Because Groundloop and TinselKoala schematics seems correct, it means that the diode rectifies the AC voltage generated in the stator coils by the normal rotation of the rotor magnets (and not the spikes from the collapsing fields), this AC voltage is chopped of course but its level seems to be enough for continuously charging the supercap and increase its voltage level...

There is this notice under his video from Larskro: "...the little capacitor is a multilayer nanocrystal 0,47uF 25volt, very important."

Why it is important?  Only he knows... but Stefan figured that it may convert ambient heat to electricity as Stefan wrote in the previous page.  Larskro measured the multilayer cap temperature 1°C lower than the ambient, I guess it is a very small temperature difference to give the needed amount of energy for the selfrunning operation, it would be really amazing to be true.  Unless this whole setup is faked, the operation of the ceramic multilayer chip capacitor could be the source of some extra energy...

Gyula

Here they are again:

http://www.overunity.com/9878/captret-capacitor-and-electret/dlattach/attach/50466/
http://www.overunity.com/9878/captret-capacitor-and-electret/dlattach/attach/50469/

You should also study Dielectric Absorption
and nonlinear Permittivity

https://en.wikipedia.org/wiki/Dielectric_absorption

https://en.wikipedia.org/wiki/Permittivity

Seems to be a demonstration of the water faucet generator he is using.  He left a comment saying that he will be uploading parts 5,6,7 soon so maybe we can tell something from them?

Bill

The key factors here IMO are dielectric absorption as highlighted by Stefan and demonstrated by TK and a very low current pulse motor / generator of the Newman type.

Hi TinselKoala,

Thanks for explaining the operation, I wrote this to Conrad a bit differently, I did not consider that the reed switch shorts out the diode in the "loop on" position.
Do you think that when the reed switch is off (still in the "loop on" switch position), then the diode does not (half-wave) rectify the AC voltage induced in the coil by the moving rotor magnet(s), provided the induced positive peak amplitude is higher than the DC level in the supercapacitor (plus the diode forward voltage of course)?
Because in these instances current could flow from the coil via the diode to charge the supercapacitor. Of course the timing of the reed switch is critical even if the induced AC voltage could not be higher (by whatever reason) during the off time of the reed than the DC level of the supercapacitor (plus the forward diode drop).

In the "loop off" switch position I 'blindly' accepted someone's remark that the diode blocks the coil's collapse spike from the supercapacitor... my bad.

Nevertheless, It would be good to see some scope shots on Larskro's setup for sure.

Thanks, Gyula