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Author Topic: The bifilar pancake coil at its resonant frequency  (Read 138253 times)

Offline Jimboot

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Re: The bifilar pancake coil at its resonant frequency
« Reply #1530 on: May 06, 2017, 12:35:39 PM »
Nope
Two mens opinion.

I agree 100% Chet.


Brad
3 and I would add just attack the data not the messenger. I loved that about MarkE. 

Free Energy | searching for free energy and discussing free energy


Offline Grumage

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Re: The bifilar pancake coil at its resonant frequency
« Reply #1531 on: May 06, 2017, 12:56:21 PM »
Hello All.

For something " quick and dirty " what about Copper " Slug repellent " tape?

It comes in various lengths and widths with a non stick paper backing, any type of " bi, tri or quad " configuration could be tried fairly easily.

Just a thought....

Oh Poynt99 has also suggested coaxial cable. L1 being the centre core and L2 the braid.

Cheers Graham.

Offline Dog-One

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Re: The bifilar pancake coil at its resonant frequency
« Reply #1532 on: May 06, 2017, 01:16:30 PM »
Hello All.

For something " quick and dirty " what about Copper " Slug repellent " tape?

It comes in various lengths and widths with a non stick paper backing, any type of " bi, tri or quad " configuration could be tried fairly easily.

Just a thought....

Oh Poynt99 has also suggested coaxial cable. L1 being the centre core and L2 the braid.

Cheers Graham.

Don't think coax cable will work.  Tried a bunch of that.  But PCBs...   Yeah, that's the ticket.

You guys jump in with some specs and I'll design'm, post'm and you can play with'm.

Offline Jimboot

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Re: The bifilar pancake coil at its resonant frequency
« Reply #1533 on: May 06, 2017, 02:07:19 PM »
I'm on board Matt (pun intended) My understanding was high impedance, more turns will get desired effect at a lower frequency, so more accessible.


Offline nelsonrochaa

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Re: The bifilar pancake coil at its resonant frequency
« Reply #1534 on: May 06, 2017, 02:17:50 PM »
Unfortunately your video shows very little in the way of correct power analysis method's--it has to be far better than that.


Brad

Hi Tinman, about your comment, I agree, that power analysis method's is not the best,but give a slight idea :) to people that not have a scope , and for sure you will agree that forum is not only you or me or a single minority , but a community of lot people that not have the same tools like some have .

About you say that i need make better than that in relation to “power analysis method's” , I left that job to people more skilled than me  like you :) with you bench tests . Good luck to feed back the system ;)


Cheers


Nelson Rocha

Free Energy | searching for free energy and discussing free energy

Re: The bifilar pancake coil at its resonant frequency
« Reply #1534 on: May 06, 2017, 02:17:50 PM »
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Offline AlienGrey

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Re: The bifilar pancake coil at its resonant frequency
« Reply #1535 on: May 06, 2017, 02:32:06 PM »
Don't think coax cable will work.  Tried a bunch of that.  But PCBs...   Yeah, that's the ticket.

You guys jump in with some specs and I'll design'm, post'm and you can play with'm.
try not to talk too much about 'slugs' at eating times! But have you noticed the cost of compact low voltage bell wire ? is it gold plated?
Anyway has anyone tried using obsolite coils of ribbon cable dead cheap and compact? just a thought that might be of use.

AG

Offline tinman

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Re: The bifilar pancake coil at its resonant frequency
« Reply #1536 on: May 06, 2017, 03:27:24 PM »
Wound another coil today,just to see what would happen.
I used 3mm multistrand wire,plastic insulated.

As expected,the capacitance value was low,as well as the inductance value.
So this means a higher operating frequency-but i did get it to work.

The lit bulb is where R1 go's in Partzman's circuit,and the unlit one has one leg between R1 and R2,and the other leg is at the P/in point.


Brad

Free Energy | searching for free energy and discussing free energy

Re: The bifilar pancake coil at its resonant frequency
« Reply #1536 on: May 06, 2017, 03:27:24 PM »
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Offline tinman

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Re: The bifilar pancake coil at its resonant frequency
« Reply #1537 on: May 06, 2017, 03:30:10 PM »
Hi Tinman, about your comment, I agree, that power analysis method's is not the best,but give a slight idea :) to people that not have a scope , and for sure you will agree that forum is not only you or me or a single minority , but a community of lot people that not have the same tools like some have .

About you say that i need make better than that in relation to “power analysis method's” , I left that job to people more skilled than me  like you :) with you bench tests . Good luck to feed back the system ;)


Cheers


Nelson Rocha

My skill set is not with electronic's-although i am getting better lol.
My scope is also an el-cheapo,and one channel is misbehaving-but we carry on with what we have.


Brad

Offline ramset

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Re: The bifilar pancake coil at its resonant frequency
« Reply #1538 on: May 06, 2017, 03:58:53 PM »
I did notice DogOne made a comment about ribbon cable being no good [and he was sad]

This is not the case at all.

AlienGrey
I will ask for a clarification on that today [I believe it is preferred in some cases of MEI work

thx
Chet

Offline Dog-One

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Re: The bifilar pancake coil at its resonant frequency
« Reply #1539 on: May 06, 2017, 06:59:19 PM »
Quote from: Jimboot
I'm on board Matt (pun intended) My understanding was high impedance, more turns will get desired effect at a lower frequency, so more accessible.

From my comprehension of what's going on here, spacing between conductors and
perimeter is critical.  What I don't know is if completely flat like a PCB is better than
having the surfaces facing each other--like the way a electrolytic capacitor is rolled.

Evostars was wishing there was a 3D electric field simulator available that could show
how the fields manifest, but without such a piece of software, I suppose we wing-it
for the moment and find out trial-n-error.

Anyway Jim, I'll continue on with a PCB design and post it.  That will give some of
us a reference platform to work from where we can compare notes and focus on the
drive circuitry.


I did notice DogOne made a comment about ribbon cable being no good [and he was sad]

This is not the case at all.

That's good because I now have a bunch of it.

Free Energy | searching for free energy and discussing free energy

Re: The bifilar pancake coil at its resonant frequency
« Reply #1539 on: May 06, 2017, 06:59:19 PM »
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Offline ramset

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Re: The bifilar pancake coil at its resonant frequency
« Reply #1540 on: May 06, 2017, 07:19:38 PM »
hmm
somebody posted an image which grew the page
anyhoo
here are some interesting control experiments  which Poynt had requested [were actually on  Tinsel's "things to do/Check list " ]


http://www.overunityresearch.com/index.php?topic=3445.msg61765;topicseen#msg61765

respectfully

Chet K

Offline ramset

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Re: The bifilar pancake coil at its resonant frequency
« Reply #1541 on: May 06, 2017, 11:53:57 PM »
And  poynt's control circuit result is being discussed further

http://www.overunityresearch.com/index.php?topic=3445.msg61775;topicseen#msg61775

Offline Magluvin

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Re: The bifilar pancake coil at its resonant frequency
« Reply #1542 on: May 07, 2017, 02:52:14 AM »
Had a lith batt pack on charge on my bench and later into the charge I heard a PSSSSSSSsssss.  Went and looked and sure enough 1 of the 18650 cells ruptured and spewed liquid on the bench a bit but that was it. I said, dang I gota get this outside now. I disconnected the charger and grabbed it by the pigtail and got half way to the open garage door..........

Mags

Offline Magluvin

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Re: The bifilar pancake coil at its resonant frequency
« Reply #1543 on: May 07, 2017, 03:07:34 AM »
Yep. Got me.  Learn new crap every day. ::)   But Im glad it didnt happen on my bench on front of my scope, PS, stereo, bench surface, charger, etc. It was like having like a firework of some kind.  Like 4 road flares 2 in the opposite direction, times 5 on the output, then just flamed for a bit..  lol just noticed I dont have any hair on that arm on most of it below the elbow. Im a freak now.lol

Im doing work for a guy that his business uses these packs of 4 set up for 7.4v series parallel with the safety circuit board on top. This pack was one that we were testing to see if it would take a charge as the charge circuit in the device wasnt charging it.  Ends up it was one of the first ones of the bunch.  Sooo now I am getting a metal cabinet for this stuff for testing and charging. 

An event like that can really make ya an instant critic on lith batts..  Yup

Tesla cars have 444 18650 panasonics in each pack.  I imagine when they go its a bit more, emmm, explosive. :o

Mags

Offline citfta

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Re: The bifilar pancake coil at its resonant frequency
« Reply #1544 on: May 07, 2017, 03:51:19 AM »
Hi Mags,

One indication of a bad lithium is a slightly swelled case.  I had one that took a charge fine.  When my RC plane was climbing out it got to about 100 feet up and bang the lithium battery blew apart and caught fire.  Luckily the explosion blew it out of the plane and it fell on the runway and burned there and the plane of course just tumbled down because of the loss of balance without the battery and no power.

Most places that sell the RC size lithiums also sell a charging bag to put them in while charging them.  I never charge one without it being in the bag after seeing the kind of fire they make when they go bad.  I think the bag is made of Nomex.

Sorry to see the nasty burn you got.  Very glad it was not worse.  I have heard on the RC forums about  people losing their homes because of fires started by lithium batteries.  I cringe every time I see a post where someone is trying to charge a lithium with their Joule Thief or other pulse type charger.  They are literally playing with fire.

Take care,
Carroll

Free Energy | searching for free energy and discussing free energy

Re: The bifilar pancake coil at its resonant frequency
« Reply #1544 on: May 07, 2017, 03:51:19 AM »

 

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