Selfcharging cap circuit from Larskro fake or real ?

[conradelektro]

Well, from this video https://www.youtube.com/watch?v=t3lwc683EgI I get the impressin that "under the table" there is magnet turning and the magnet inside the visible coil is draged along?

The "magnet under the table" might be turned by an electric motor (all not visble, because it is "under the table"). The "remote action" (one magnet to the other) can be over a distance of 10 to 20 centimetres.

Just a guess.

Greetings, Conrad

[TinselKoala]

Yes, the LEDs would seem to waste power. If you are worried about overvolting the supercap, maybe use a Zener diode in place of the LEDs but reverse-biased. That way it won't conduct until the Zener voltage is reached and this will limit the max voltage of the cap.

Yes, I've shown the voltage recovery while driving a load (a JT with LED) also, using a 10F supercap partially discharged quickly after a full charge.

But if Larskro's device is just doing this, why doesn't it do it in both switch positions? With no external power, in the "loop off" position the motor isn't running anymore (the reed switch is out of the circuit) but the LEDs will still be lit by the capacitor storage.

[Vortex1]

Hi Conrad

I also considered that drag effect a possibility, since in some of his videos he is playing with very small motors,  however it might be difficult to time it correctly.

However it need not be timed if the motor under the table is inducing directly into the windings of the upper motor directly via a magnet mounted on the shaft of the lower motor.

He can synchronize control of the "on or off" state of the lower motor for "looped / not looped" to complete the illusion. A foot switch or accomplice would do.

[TinselKoala]

Well, from this video https://www.youtube.com/watch?v=t3lwc683EgI I get the impressin that "under the table" there is magnet turning and the magnet inside the visible coil is draged along?

The "magnet under the table" might be turned by an electric motor (all not visble, because it is "under the table"). The "remote action" (one magnet to the other) can be over a distance of 10 to 20 centimetres.

Just a guess.

Greetings, Conrad

He's being "very very" careful not to show the power connections or where the power is coming from in that video. It's always something!

The motor slows and stops, then when it starts again it goes faster. If this is a result of battery/capacitor voltage recovery... hmmm.  Let's think about that for a moment.

The motor stops, and either the reed switch is open or closed. If it is closed, then the motor coils are conducting and the cap/batt voltage can't recover on its own. If the reed is open, then the motor won't start until it's given a little push even if the voltage is high enough to run it.

[TinselKoala]

Anyhow, fwiw, here's the video of my mini-pulse Hall sensor motor in operation.  I don't show it in this video but it runs well on a 0.5 F cap for some seconds, and runs down to 3.7 volts on the cap , although the mosfet is just barely switching at that voltage. I've tried various hookups to see if I can get the capacitor recovery/recharge effect but so far no luck. I'll just have to wait until the faucet generator thingies arrive, there's no way I can construct an alternative to that tiny generator myself without my missing tooling.

http://www.youtube.com/watch?v=vg8_TmU_59w