Self running coil?

[gotoluc]

Hi everyone,

thanks for all your interest, suggestions and encouragement.

I made a new video in hope it will help replicators to better understand how to tweak the signal generator for the Toroid coil to send back the most current. I also measured the current going to the gate using my scope probe across a carbon 100 Ohm resistor. The below scope shots are the results.

Link to video: YouTube - Self Running Coil test 7

Luc

This first scope shot is when the coil is at the neutral point (no current used)


This second shot is when it is tweaked to send most energy back. One can clearly see that less current is used when sending back the most current. This is difficult for me to understand

[rave154]

LUC,

good video again, just what i needed for the tuning methodolgy

been looking at function generators, am in the mood to buy one.

for now, i have finished winding my toroid with the split windings as per yours.

i will put a pot / voltage divider on the gate from my 494 so i can vary the voltage to the gate.

hmm..... i think i know what i'll be doing this weekend ! lol

[gotoluc]

Hi All,

a new video once again.

Link: YouTube - Self Running Coil test 8

Luc

[ewizard]

Great job Luc! That video really does say a lot about what is and is not going on.

gmeast, It sounds like you had some interesting work with the analog computers. Too bad on the MosFET's getting tossed out. I tend to be a real pack rat myself but I've also tossed a few things I wish I had now for this work. I recently stripped down several UPS's, computer power supplies and have got a number of monitors to go through. There are some really nice parts on the bigger UPS units I had but no IRF640's - got a couple of them on the way though as that's the only thing I lack.

[maxc]

Good job gotoluc!
Take your air coil put 10 volt zener diodes (cathode too cathode)and resistors on it so when it is in a ac field there's square wave output. Run the gate of the center. Then it will start too self resonate. Adjust with resistors?

[gotoluc]

Hi all,

here is a new video demonstrating a pickup coil and a LED as load.

Link: YouTube - Self Running Coil test 9

Luc

[gmeast]

nothin's leaking through

Hi all,

here is a new video demonstrating a pickup coil and a LED as load.

Link: YouTube - Self Running Coil test 9

Luc

Hi Luc,

Remember that the gate/drain acts like a little capacitive 'cushion' or accumulator. The LED sees the pulsing from the generator as an AC VA. The LED is just being pumped by dirty AC. The leakage is even less than the soft glow of the LED suggests.

The 'relatively' inefficient coupling of the pickup coil and the toroid says it all. Do you know if there might be a transformer step-up effect from the p-u coil/toroid coupling?

Nice job slicing away at the doubts. This is very exciting, Gramps,

Greg

[rave154]

Great vids again LUC

one small test, you may have already done it...

with the setup as in vid-9... have you placed the pickup coil over & around the magnets?

Enjoy your beak

David. D

[gotoluc]

Just some other info I stumbled across that may be important as it was from a fairly obscure source. It was stated in such circuits as this that if it can be made to run above 20 Khz that by adding an Earth ground in the circuit you may find your amperage increases substantially. I see you are now running well above 20 Khz so maybe this will be worth a try if you haven't already. Thanks for the schematic and I just popped back in here a minute ago so I haven't seen the new vid's yet but thanks for those too as I'll be on them in a minute

Hi ewizard,

just to let you know that yesterday I did try to ground the circuit at different locations but found no benefit.

Luc

[gotoluc]

Hi Luc,

Remember that the gate/drain acts like a little capacitive 'cushion' or accumulator. The LED sees the pulsing from the generator as an AC VA. The LED is just being pumped by dirty AC. The leakage is even less than the soft glow of the LED suggests.

The 'relatively' inefficient coupling of the pickup coil and the toroid says it all. Do you know if there might be a transformer step-up effect from the p-u coil/toroid coupling?

Nice job slicing away at the doubts. This is very exciting, Gramps,

Greg

Hi Greg,

thanks for your post and information.

As for the transformer coupling effect with the pickup coil. I can say that if there is one it is nothing like a regular transformer that is for sure. The toroid when tuned is behaving like a coil in resonance. If I introduce the pickup coil it gets a little out of tune but I can re-tune and it goes back to where it was. Once it is re-tuned, if I connect or disconnect the load (like the LED) nothing changes. So the re-tuning needed is maybe caused by introducing the mass of copper the pickup coil has?

Hope this answers your question

Luc

[gotoluc]

Great vids again LUC

one small test, you may have already done it...

with the setup as in vid-9... have you placed the pickup coil over & around the magnets?

Enjoy your beak

David. D

Hi David,

yes I have done that. The best pickup is a little away from the magnet and not over it.

Luc

[gotoluc]

Good job gotoluc!
Take your air coil put 10 volt zener diodes (cathode too cathode)and resistors on it so when it is in a ac field there's square wave output. Run the gate of the center. Then it will start too self resonate. Adjust with resistors?

@maxc and everyone

One way to Isolate the signal generator is to use an OPTO Isolator and connect the switching side of the OPTO to the capacitor bank to feed the mosfet gate. I do have a 4N35 and a H11D1 which I both tried last night but they are way too slow to shut off. At 1KHz they were at 95% duty and to full on with frequencies over that. My signal generator is fixed at 50% duty. So these are not working or I don't know how to connect them correctly. If someone with electronic knowledge can recommend an Isolator which could work a up to 50KHz and still keep the 50% duty cycle using a component that I can pickup locally please look at the two suppliers in my city for stock: RESET ELECTRONICS INC - or http://www.active123.com/

The other way is using the pickup coil to trigger the mosfet. This is complicated because the pickup coil is a sine wave that it peaks are out of phase with the mosfet pulses. So again I'm at a loss of how to use this energy or build a circuit that could create the very exact frequency, gate drive voltage and current that is needed.

I'll see if I can pickup a CMOS 555 locally and try to power it from the cap bank by keeping it in the 10vdc range.

AT EVERYONE If you know how to close the loop please provide a complete drawing of how to build it. Please do not just say do this and that. I am willing to do everything I can and I think I have done all I can with my minimal electronic knowledge I have.

Thank you for your time

Luc

[Guest]

@maxc and everyone

One way to Isolate the signal generator is to use an OPTO Isolator and connect the switching side of the OPTO to the capacitor bank to feed the mosfet gate. I do have a 4N35 and a H11D1 which I both tried last night but they are way too slow to shut off. At 1KHz they were at 95% duty and to full on with frequencies over that. My signal generator is fixed at 50% duty. So these are not working or I don't know how to connect them correctly. If someone with electronic knowledge can recommend an Isolator which could work a up to 50KHz and still keep the 50% duty cycle using a component that I can pickup locally please look at the two suppliers in my city for stock: RESET ELECTRONICS INC - or http://www.active123.com/

The other way is using the pickup coil to trigger the mosfet. This is complicated because the pickup coil is a sine wave that it peaks are out of phase with the mosfet pulses. So again I'm at a loss of how to use this energy or build a circuit that could create the very exact frequency, gate drive voltage and current that is needed.

I'll see if I can pickup a CMOS 555 locally and try to power it from the cap bank by keeping it in the 10vdc range.

AT EVERYONE If you know how to close the loop please provide a complete drawing of how to build it. Please do not just say do this and that. I am willing to do everything I can and I think I have done all I can with my minimal electronic knowledge I have.

Thank you for your time

Luc

Hi Luc,

I have been following your work and it is very interesting. You can try this circuit to isolate the energy coming from the SG. Keep up the good work I'm very excited, and I thing this has a potential of becoming an interesting device.

Regards,
Nenad

[gotoluc]

Thanks Nenad for the circuit.

Do you know about how much current this circuit will use?

I just tried 3 models of OPTO's and what is left of the pulse signal at the mofet gate is very ugly @20KHz it has next to no pulse width and much worse @30KHz. There is no way a signal like this will switch the mosfet correctly. The other problem is, I need a 10K resistor across the gate and source to turn the mosfet off after the pulse and that alone consumes 600 micro amps. at 20KHz let alone what the gate will use.

I picked up a CMOS 555 and from what I can measure it consumes 300 micro amps, so I'll play around with that and see what it can do.

Luc

[ewizard]

Still waiting on some IRF640's but I have been ripping parts out of some old power supplies and UPS's and found a Motorola MTH30N25 which is a mosFET I thought I'd try in the meantime. I also found a humungous 10 pound torroid about 6.5" across and 1.75" thick.





I'm sure it's not wound right for this but I couldn't resist trying it. I also had a smaller torroid that looked like it was already wound correctly but unfortunately not nearly enough turns of wire. So I mostly played with the smaller one and found some narrow frequency points that ONLY with the magnet on produced some interesting (at least to me) scope patterns. These were mostly around 14 Khz but I found some other narrow ranges also. This was a square wave from a digital signal generator and scope shots from a digital 400 Mhz scope. I have rather little experience on o-scopes so I can't say much about this but would ask if anyone can tell me what if anything is unusual here. This is using only one probe. It seems like there are 3 or even 4 sine wave patterns in some cases. Scope probe was across the mosFET at the same place the signal generator was attached. And again these only would show up with a strong Neo attached with a spacer that was roughly 3/32" thick. As soon as I get time I'm going to try winding one correctly. At this point no voltage increases were found - I generally hit the cap with a battery for a couple seconds and then ran off the cap while watching the voltage slowly go down as I tuned the signal generator. Considering the number of things that are NOT right with this setup I was not surprised that I had no good news like Luc's been getting. Just getting started though and curious about the scope shots (the middle shot is without the magnet) :