Storing Cookies (See : http://ec.europa.eu/ipg/basics/legal/cookies/index_en.htm ) help us to bring you our services at overunity.com . If you use this website and our services you declare yourself okay with using cookies .More Infos here:
https://overunity.com/5553/privacy-policy/
If you do not agree with storing cookies, please LEAVE this website now. From the 25th of May 2018, every existing user has to accept the GDPR agreement at first login. If a user is unwilling to accept the GDPR, he should email us and request to erase his account. Many thanks for your understanding

User Menu

Custom Search

Author Topic: The bifilar pancake coil at its resonant frequency  (Read 567593 times)

Magluvin

  • Hero Member
  • *****
  • Posts: 5884
Re: The bifilar pancake coil at its resonant frequency
« Reply #1410 on: May 04, 2017, 06:36:19 PM »
Same here Grum. Had a friend/roommate die in bed with hart failure some 8 years back.  Cops were all over the place from 8pm to 1am. They were asking me crazy questions to feel me out... Like when I told them what I did for a living, they were asking me what is the best way to remove paint from an old corvette, etc, like I wanted to have that conversation or even try. Then they put me in a car with a tape recorder and asked lots of relevant questions all the way to "did you kill craig"  NO I said. Was a bad day and the weeks after as I hadnt ever even seen a person passed away other than at a funeral of which I hadnt seen since i was a kid.

Its a crazy weird life.

Mags

ramset

  • Hero Member
  • *****
  • Posts: 8073
Re: The bifilar pancake coil at its resonant frequency
« Reply #1411 on: May 04, 2017, 06:37:08 PM »
UMmm
I know this is odd
but I should break the Ice [since Grum is on house duty and not  reading ATM

Twas a friend he lost here due to moderating him...not an actual death of a friend

hope that clears that up

he Now choses to not moderate here.



TinselKoala

  • Hero Member
  • *****
  • Posts: 13958
Re: The bifilar pancake coil at its resonant frequency
« Reply #1412 on: May 04, 2017, 06:41:24 PM »
Here you go, an exercise in power calculation.

CH1 is the input voltage.
CH2 is the input current, measured by the voltage drop across a precision noninductive resistor and converted to a current value.
CH3 is the output voltage across a 19.8 ohm precision noninductive resistor stack.
Math channel is CH1 x CH2.
Phase shift (for power factor correction) from CH1 to CH2 is -82.39 degrees.

All the information is there on the screen and in this post for calculation of Average Input Power, Average Output Power, and COP.

The Math automatic average measurement shows the Input Power directly, but this value may be a little off, so the manual computation should also be performed as a check.


ramset

  • Hero Member
  • *****
  • Posts: 8073
Re: The bifilar pancake coil at its resonant frequency
« Reply #1413 on: May 04, 2017, 06:50:35 PM »
Hmm
I just heard MH is on Moderation, and has sent Pm's alluding to me as the instigator.

I had nothing at all to do with this ,I do know Stefan absolutely detests being annoyed all the time
from complaints here.

I will be speaking with Stefan about good things here this weekend ,how to support experimenters
here.

respectfully
Chet K


TinselKoala

  • Hero Member
  • *****
  • Posts: 13958
Re: The bifilar pancake coil at its resonant frequency
« Reply #1414 on: May 04, 2017, 06:51:37 PM »
UMmm
I know this is odd
but I should break the Ice [since Grum is on house duty and not  reading ATM

Twas a friend he lost here due to moderating him...not an actual death of a friend

hope that clears that up

he Now choses to not moderate here.

Oh.... I see.  Well, I just found out about a real death today and I'm still shaken up over that.

Copy paste this, ese.

Magluvin

  • Hero Member
  • *****
  • Posts: 5884
Re: The bifilar pancake coil at its resonant frequency
« Reply #1415 on: May 04, 2017, 07:00:59 PM »

 :'(


can a moderator spank TK for this racial remark....I am offended....

Lol

Im not going to remove any posts, and Graham is out on that end, so Brad will have to use his discretion on those things from here on in this thread.

Mags

Magluvin

  • Hero Member
  • *****
  • Posts: 5884
Re: The bifilar pancake coil at its resonant frequency
« Reply #1416 on: May 04, 2017, 07:57:02 PM »

Was being sarcastic....but at the same time was pointing out the obvious....  Folk should be able to say whatever they want....  it's just words....

Your right. Im going to follow that lead here on in.  If it doesnt work out for some then sobeit. ;)   

Mags


Grumage

  • Hero Member
  • *****
  • Posts: 1113
Re: The bifilar pancake coil at its resonant frequency
« Reply #1417 on: May 04, 2017, 08:26:51 PM »
UMmm
I know this is odd
but I should break the Ice [since Grum is on house duty and not  reading ATM

Twas a friend he lost here due to moderating him...not an actual death of a friend

hope that clears that up

he Now choses to not moderate here.

Thanks for clearing that up Chet.

Indeed, thanks to all for the messages both public and private.

One thing that has become apparent is that this community has a heart of solid Gold and it beats strongly.

Kind regards, Graham.

tinman

  • Hero Member
  • *****
  • Posts: 5365
Re: The bifilar pancake coil at its resonant frequency
« Reply #1418 on: May 05, 2017, 02:17:09 PM »
So,things found so far with the BPC

1-Adjusting the frequency can result in either the circuit being more inductive than capacitive,or more capacitive than inductive-we are talking turn coupling here.
At the right frequency,the circuit can be seen as purely resistive,and phase alignment is quite easy to achieve-->power factor of 1.

2-As the P/in is very low,due to using the SG as the P/in source,i switched to 1/4 watt resistors.
With R1 and R2 being 100 ohm's,and R2 dissipating the most power,one would think that it would be R2 that has the highest temperature rise,when in fact,R1,which is dissipating less power,shows the higher temperature gain.After 10 minutes running,where R2 is dissipating twice the power,it's temperature actually drops by 1.5*C below room temperature,while R1,which is dissipating only half the power of R2,rises by 2*C above room temperature.

3- The frequency can be adjusted so as the current flowing through the coil,can flow in both directions at once--some one here mentioned that  :o
So the current enters the coil in one direction,at the center tap (where R2 is on my schematic),the current is flowing in the opposite direction,and then once again flows out of the coil,in the same direction it is flowing into the coil.
Russ also showed this in his first video reply to me,but seems he missed the significance of this  ???

I will be carrying out the same tests on a bifilar solenoid coil,so as we can see if the BPC stands alone with the above.


Brad

ramset

  • Hero Member
  • *****
  • Posts: 8073
Re: The bifilar pancake coil at its resonant frequency
« Reply #1419 on: May 05, 2017, 04:10:41 PM »
Quote
Erfinder
 Folk should be able to say whatever they want....  it's just words....
--------------------------------------

Well
perhaps some perspective
here there are people who pop in and out just for casual interest

and then there are folks who are much more serious [experimenters] who have dedicated huge portions of their life to this "research"
 I have found many of the more serious involve their families and share much with their wives and even Kids and grandkids ,its a part of their family experience.

The Kids or grandkids, wives  can read here.

It is true that there are other forums where this is easier to do, however why is it so important to trade street talk for
this??

being able to share this experience with the next generation ,and even with Wives or similar, should not be dismissed so easily
 
Just one mans opinion



respectfully
Chet K



tinman

  • Hero Member
  • *****
  • Posts: 5365
Re: The bifilar pancake coil at its resonant frequency
« Reply #1420 on: May 05, 2017, 04:41:39 PM »
Quote
Erfinder
 Folk should be able to say whatever they want....  it's just words....
--------------------------------------

Well
perhaps some perspective
here there are people who pop in and out just for casual interest

and then there are folks who are much more serious [experimenters] who have dedicated huge portions of their life to this "research"
 I have found many of the more serious involve their families and share much with their wives and even Kids and grandkids ,its a part of their family experience.

The Kids or grandkids, wives  can read here.

It is true that there are other forums where this is easier to do, however why is it so important to trade street talk for
this??

being able to share this experience with the next generation ,and even with Wives or similar, should not be dismissed so easily
 
Just one mans opinion



respectfully
Chet K

Nope
Two mens opinion.

I agree 100% Chet.


Brad

partzman

  • Sr. Member
  • ****
  • Posts: 379
Re: The bifilar pancake coil at its resonant frequency
« Reply #1421 on: May 05, 2017, 06:44:13 PM »
Quote
Erfinder
 Folk should be able to say whatever they want....  it's just words....
--------------------------------------

Well
perhaps some perspective
here there are people who pop in and out just for casual interest

and then there are folks who are much more serious [experimenters] who have dedicated huge portions of their life to this "research"
 I have found many of the more serious involve their families and share much with their wives and even Kids and grandkids ,its a part of their family experience.

The Kids or grandkids, wives  can read here.

It is true that there are other forums where this is easier to do, however why is it so important to trade street talk for
this??

being able to share this experience with the next generation ,and even with Wives or similar, should not be dismissed so easily
 
Just one mans opinion



respectfully
Chet K

I 100% agree as well!

Pm

ramset

  • Hero Member
  • *****
  • Posts: 8073
Re: The bifilar pancake coil at its resonant frequency
« Reply #1422 on: May 05, 2017, 07:17:43 PM »
Not sure if this has been linked here
https://www.youtube.com/watch?v=MNzbc-N-e9c
-------------------------------------------------------------------------------------------------------------------------------------------
NOTE
There is a member here who has chosen to destroy and demean the work of Tinselkoala
most here know who this is ,I will not comment any futher, However if this person is allowed to continue their personal vendetta or is seen posting here

Tinsel has requested his acc]t here be removed in its entirety.

this has not happened as of yet?
 


---------------------------------------------------------------------------------------------------------------------------------------------
TK has put a tremendous effort in here, and I know he holds no conclusions supporting any claims.

as Partzman is doing the same here...and Partzman's commitment and work to date is not really possible to measure [Tremendous investment in time and money [years long]

and still.. scientific Scrutiny is embraced and whole heartedly encouraged !

is there an error and where does it hide??

respectfully
Chet K

nelsonrochaa

  • Hero Member
  • *****
  • Posts: 653
Re: The bifilar pancake coil at its resonant frequency
« Reply #1423 on: May 05, 2017, 07:39:39 PM »
Not sure if this has been linked here
https://www.youtube.com/watch?v=MNzbc-N-e9c
-------------------------------------------------------------------------------------------------------------------------------------------
NOTE
There is a member here who has chosen to destroy and demean the work of Tinselkoala
most here know who this is ,I will not comment any futher, However if this person is allowed to continue their personal vendetta or is seen posting here

Tinsel has requested his acc]t here be removed in its entirety.

this has not happened as of yet?
 


---------------------------------------------------------------------------------------------------------------------------------------------
TK has put a tremendous effort in here, and I know he holds no conclusions supporting any claims.

as Partzman is doing the same here...and Partzman's commitment and work to date is not really possible to measure [Tremendous investment in time and money [years long]

and still.. scientific Scrutiny is embraced and whole heartedly encouraged !

is there an error and where does it hide??

respectfully
Chet K

Ramset, seems After all it seems like there's something special about PBC ...   even the measures be inconclusive ;) and be made by impartial persons like TK .

I hope the best is yet to come. ;)



Nelson Rocha

ramset

  • Hero Member
  • *****
  • Posts: 8073
Re: The bifilar pancake coil at its resonant frequency
« Reply #1424 on: May 05, 2017, 09:38:51 PM »
Nelson
Honestly it is very hard to believe. and here the Skeptic [the capable skeptic] is embraced with gratitude.
Transmission line theory and standard EE modeling are overlapping here[maybe more too??.

However there have been other ways to show these results[input dropping with load applied]
and those were easier to sort [find the real gain mechanism ,[or error]..

I know it can change either way at any moment...with Lots of help arriving daily to assist.
But I agree
Lets hope the best is yet to come!!

respectfully
Chet K