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Author Topic: Inductive Kickback  (Read 157797 times)

AlienGrey

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Re: Inductive Kickback
« Reply #195 on: February 25, 2018, 07:13:29 AM »
When i said !idiots!,i was referring to those that post articles on the net,that do nothing more than tell untruths about how inductors work,which just further confuses those trying to learn the truth.
I was not referring to anyone here on this forum.


Brad
Brad did you say that? sorry no offence I couldn't have read your comment on the tread properly in the tread.
To be honest I had to make up a circuit and re test the theory again for my self just to make sure.
I think TK has a video showing this phenomena ! i will try to re post it if I can find it i'm sure he wont mind  8)
https://www.youtube.com/watch?v=8vyg0NX0zh4
Hmm I wonder if any one will notice  :D
Happy days

AG Allen

dieter

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Re: Inductive Kickback
« Reply #196 on: February 25, 2018, 04:26:35 PM »
[/font]A link to get you started:  https://en.wikipedia.org/wiki/InductorI had to leave for a while but now I am back.To answer the question about current flow and opposite polarity,  answer my question about which direction does current flow inside a battery.  Does it flow from positive to negative or the other way round?  And which way does it flow outside the battery?  When you get the answer to that you will understand why polarity can switch on an inductor but the current still flows the same way.Also do you have a way to conduct the test with a 2 channel scope?Carroll
[/font]
In a battery the current flows from the positive pole over a conductor to the negative pole. However, if you attach a battery charger instead of a conductor, then current flows in at the batteries positive pole and out of the negative pole. It requires the charger voltage to be higher than the battery voltage.


Current and voltage have this relationship that there can be voltage without current, like an empty riverbed, but no current without voltage, like a river without a bed.


Therefor I do not agree with your initial statement. Inductive Kickback has reverse Voltage and therefor reverse current flow.
At any point in a curcuit, current will always flow from a higher to a lower voltage. Even if the current measured accross the coil seems time delayed, it still holds true.

dieter

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Re: Inductive Kickback
« Reply #197 on: February 25, 2018, 04:38:06 PM »
Oh, btw, Carroll, there is no current flow inside the battery, only ion exchange.
Therefor this allows us to say, that every electron that goes out at plus, must come in at minus, in order to make this battery work at all. It does not have to be the same ekectron tho. It could be one from china or from mars. The battery doesn't care.


Internally it's a voltaic or capacitive Action, eg. oxidation of one of two metals by ion exchange that forces and requires the outside electron transfer. But you knew that. (And please no physicuans vs electricians electron direction talks... you know what I mean)

dieter

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Re: Inductive Kickback
« Reply #198 on: February 25, 2018, 05:09:40 PM »
And since we are talking about inductive kickback,a few more words.


The voltage of the Kickback must be higher than the supply to make the current flow in reverse.


That is, if you did not direct it to flow to ground, or to ring/afterburn the coil in freerunning diode. No, I mean back to the positive pole.


Assuming the back spike is high, tho short, even with no load in it, which is the basic condition in this experiment, (big coil, big pulse), then you can imagine, that any high resistor would only hinder the Spike to flow back to the supply.


But one can easily use the wrong coil, that does not reach flowback condition, which then just locks or parasiticly dampens the coil state.


TinselKoala

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Re: Inductive Kickback
« Reply #199 on: February 25, 2018, 07:47:11 PM »
Quote from: dieter
Therefor I do not agree with your initial statement. Inductive Kickback has reverse Voltage and therefor reverse current flow.

Wrong yet again. Study the graph AGAIN posted below. When the inductor is switched off, the inductor now acts as a source, the voltage VL across it is reversed-- and hence the current IL continues to flow from the inductor IN THE SAME DIRECTION as before.

Nature doesn't care about what you agree with or not, but the facts of the matter are clear. Perhaps you would like to try to explain the results of the LED demonstrations that Citfta and I have published.





sm0ky2

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Re: Inductive Kickback
« Reply #200 on: February 26, 2018, 01:01:40 AM »
It seems that what is being missed here is that the coil
is Conductive


current flows from + to - THROUGH the coil!
in both conditions
First from source
Second from coil (reverse polarity)


This current is in the Same direction
if you want to route this “back to source” you do it from the - end
back to the + of the battery
You still aren’t changing the direction of current Through the coil.

Battery has an internal resistance that prevents this
The coil (being a conductor) does not


synchro1

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Re: Inductive Kickback
« Reply #201 on: February 26, 2018, 03:49:35 AM »
It seems that what is being missed here is that the coil
is Conductive


current flows from + to - THROUGH the coil!
in both conditions
First from source
Second from coil (reverse polarity)


This current is in the Same direction
if you want to route this “back to source” you do it from the - end
back to the + of the battery
You still aren’t changing the direction of current Through the coil.

Battery has an internal resistance that prevents this
The coil (being a conductor) does not

@smOky2,

Wrong! Power travels away from the positive electrode then power moves toward the positive electrode. Toward and away are different directions. The current turns around; It does not continue in the same direction!

citfta

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Re: Inductive Kickback
« Reply #202 on: February 26, 2018, 11:26:52 AM »
MAKE A VIDEO AND PROVE IT!  You have  been shown two videos that prove you are wrong.  Now make one and prove you are right.  You and I both know you can't do it.  The video you keep referring to where some guy claims he is sending power back to the battery is wrong.  As someone has pointed out in the comments he has the Led that he claims is sending the power back hooked up backwards.  TK and I have both shown with videos that current cannot and does not flow back to the source.

synchro1

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Re: Inductive Kickback
« Reply #203 on: February 26, 2018, 11:38:40 AM »
@Citfta,

What do you mean "some guy"? Igor Moroz is much more then just some guy. You are the "Just some guy"!

Here's a video where I'm doing it:

https://www.youtube.com/watch?v=COLDfC6aPFM

citfta

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Re: Inductive Kickback
« Reply #204 on: February 26, 2018, 11:51:03 AM »
I may be just some guy also but I do know how to connect a Led up properly.  NOW MAKE A VIDEO AND PROVE ALL THE REST OF US ARE WRONG!!  Stop changing the subject.

synchro1

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Re: Inductive Kickback
« Reply #205 on: February 26, 2018, 12:03:26 PM »
I may be just some guy also but I do know how to connect a Led up properly.  NOW MAKE A VIDEO AND PROVE ALL THE REST OF US ARE WRONG!!  Stop changing the subject.

@Citfta,

I just posted a video above. Take three AA batteries. Connect two AA batteries in series, then connect the negative electrodes. Now attach an LED between the positive poles and measure the voltage in the single battery. Let the LED shine for a few minutes then re-check the voltage in the single AA.

synchro1

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Re: Inductive Kickback
« Reply #206 on: February 26, 2018, 12:17:50 PM »
The long prong on the LED is the positive. The positive or long prong goes to the positive electrode of the top AA in the two AA's in series, that's the nipple end. The negative or short prong to the positive electrode of the single AA. The negative electrodes, thats the flat sides of the AA's are connected. 

synchro1

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Re: Inductive Kickback
« Reply #207 on: February 26, 2018, 12:24:43 PM »
@Citfta,

Do you understand what's going on in the video? The combined voltage on the left is 13.5 volts. The voltage on the AA on the right is 1.5 volts. The positive electrode of the LED is connected to the positive electrode of the AA on the left, and the negative electrode of the LED is connected to the positive electrode of the AA on the right. The negative electrodes are connected through the 12 volt battery. The voltage on the AA on the right is increasing as the LED illuminates.

synchro1

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Re: Inductive Kickback
« Reply #208 on: February 26, 2018, 12:35:13 PM »
@Citfta,

Look, it takes a diode to loop the inductive kickback. The flyback is higher in voltage, so it wants to go home through the positive electrode of the battery from whence it came. The flyback Will travel in the same direction if you send it down the ground drain, I'll grant you that, but you just have it wired wrong.

citfta

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Re: Inductive Kickback
« Reply #209 on: February 26, 2018, 12:41:07 PM »
Allen,

You are like a Pre-schooler trying to explain to an engineer how to connect a circuit.  What a joke you are.  David Bowling, Matt Jones and I have been working with the 3 battery generating system for several years now and you think you can explain it to ME.

STOP CHANGING THE SUBJECT AND SHOW A VIDEO THAT PROVES THE CURRENT REVERSES WHEN POWER IS DISCONNECTED FROM A COIL!!!!!!

I see you posted again while I was typing this.  Explain what is going on with the video I posted.  How is it connected wrong?  It clearly shows which direction the current is flowing.

NOW MAKE A VIDEO THAT PROVES CURRENT REVERSES WHEN POWER IS DISCONNECTED FROM THE COIL!!!!

 Stop changing the subject and just do it.