Joule Thief 101

[tinman]

But all that is beside the point, you are simply failing to draw a distinction between unchanging current and changing current in the context of discussing coils.  It's just sad and it's a total fiasco.

This is the takeaway from this discussion:  All of this stupid nonsensical idiocy because poor Brad can't make a distinction between constant DC current that does not change with respect to time and current that is flowing in the same direction that does change with respect to time?

One more for the MH paradox,where a DC current has now been redefined as meaning only a steady state direct current.

Again, it's sad that your understanding is so weak and your ability to conceptualize is so limited.

As i provided all the proof required that states a direct current(DC) can vary with time,it would be a good idea for you to use correct terms when making statements.
I mean,it wasnt that long ago(on this thread),that you told me to be more accurate with my terms and meanings,so as those new to this sort of thing could understand what is going on. But once we enter the MH paradox,general terms and definitions now describe exact analysis.

You were "going after me" because you said that I supposedly said "DC current through an inductor results in no voltage across the inductor and DC current through an inductor also results in voltage across an inductor" as if that is a contradiction.
Your own cited definition of "DC current" includes a variable current so that means that in fact there is no contradiction.  So you are bonkers again.

As you can see by the pole on the MH ideal coil and voltage thread,i define what DC current is flowing when there is no measurable voltage across the ideal inductor--unlike you who just say--a DC current,which could mean variable or a steady state value. If there are those here that assume that you mean any type of DC current,then as soon as you place your ideal voltage across that ideal inductor,then a DC current will flow through that inductor,and there for conclude that you are speaking double dutch.
Practice what you preach comes to mind ATM MH


Brad

[MileHigh]

Magneticitist
The voltage across the ideal inductor dose not vary with time,as it is from an ideal source,and the value is set at 4 volts,for a time period of 3 seconds.

MH will not attempt to calculate what happens,as he dose not know--he cannot understand the difference between ideal and real. The real coil could have .000000000000000001 ohms of resistance,but it is still an infinite amount away from being ideal--no resistance. He seems to think that 100,000000000 miles is close enough to an infinite mileage--but it is not even a grain of sand on all the beaches of the world.


Brad

More complete and utter foolishness because your powers of conceptualization and application of knowledge are almost nil.  I sure as hell understand the difference between a real inductor and an ideal inductor.  Here is what you don't understand:  When you look at the example which is over a period of three seconds, then the real and the ideal coil as defined are virtually indistinguishable.  You have to factor in time and you are blind to this fact.

[tinman]

@MH


Tell us all here how you calculated your ideal coil of having 5 Henry's of inductance,when it has no resistance?.

What is inductance,and when will that induction stop?
Are you sure the inductance value of an ideal can be anything other than infinite?.

Will induction keep on going until the current reaches a steady state,and the magnetic field is no longer changing in time?.

Quote:
Electromagnetic induction is the production of an electromotive force across a conductor exposed to time varying magnetic fields.

Now,we know that you non ideal inductor can have a defined inductance value,as it will reach a maximum current flow value at 5 time constance,and induction will stop,as the magnetic field is no longer changing. But what happens when that inductor has no resistance,and no time constant. What happens when the current continues to rise to an infinite amount,and the magnetic field never stops increasing over time.
The energy being stored in that inductor rises to an infinite amount over an infinite time--it never reaches a maximum value.

How do you have a 5 Henry ideal inductor ?.


Brad

[MileHigh]

One more for the MH paradox,where a DC current has now been redefined as meaning only a steady state direct current.

As i provided all the proof required that states a direct current(DC) can vary with time,it would be a good idea for you to use correct terms when making statements.
I mean,it wasnt that long ago(on this thread),that you told me to be more accurate with my terms and meanings,so as those new to this sort of thing could understand what is going on. But once we enter the MH paradox,general terms and definitions now describe exact analysis.

As you can see by the pole on the MH ideal coil and voltage thread,i define what DC current is flowing when there is no measurable voltage across the ideal inductor--unlike you who just say--a DC current,which could mean variable or a steady state value. If there are those here that assume that you mean any type of DC current,then as soon as you place your ideal voltage across that ideal inductor,then a DC current will flow through that inductor,and there for conclude that you are speaking double dutch.
Practice what you preach comes to mind ATM MH

Brad

You are just spinning and it's all just wasted energy.  There is nothing wrong in my use of language when discussing coils and their response to excitation.  I make a reasonable assumption that you have a clue and understand context.  But of course throughout this whole discussion there have been an endless series of events where you clearly had no clue.  Stating that an ideal voltage source "cannot change in time" because you can't conceive of that or can't find a reference to that is a classic example if the insanity in trying to deal with you.  You will never be able to answer the question and that is a very sad thing.

[MileHigh]

@MH

Tell us all here how you calculated your ideal coil of having 5 Henry's of inductance,when it has no resistance?.

What is inductance,and when will that induction stop?
Are you sure the inductance value of an ideal can be anything other than infinite?.

Will induction keep on going until the current reaches a steady state,and the magnetic field is no longer changing in time?.

Quote:
Electromagnetic induction is the production of an electromotive force across a conductor exposed to time varying magnetic fields.

Now,we know that you non ideal inductor can have a defined inductance value,as it will reach a maximum current flow value at 5 time constance,and induction will stop,as the magnetic field is no longer changing. But what happens when that inductor has no resistance,and no time constant. What happens when the current continues to rise to an infinite amount,and the magnetic field never stops increasing over time.
The energy being stored in that inductor rises to an infinite amount over an infinite time--it never reaches a maximum value.

How do you have a 5 Henry ideal inductor ?.


Brad

This whole time you have clearly not understood what inductance is and that is the crux of the problem.  You have been bluffing your way through for years.

Hit the reset button and open an electronics book from page 1 and start reading.