Joule Thief 101

[MileHigh]

If you used a resistor to discharge the inductor,, when you connected the resistor what voltage would you see,, I think that would be 4V.

Forget it Webby, you are clutching at straws.  The best thing you could do is hope and pray that Brad gets through this to the end and try to ride on his coattails.

[wattsup]

@MH

This is the last time you will use my @username in your trophy room with the other heads of those you have wangled so long. I tried and tried to explain to you that your question was not properly formulated and that I understood it to be the result of one applied 4 volts.  I have known many like. There is no talking to you. So just understand this. Go fuck yourself.

wattsup

[MileHigh]

Wattsup:

You have caused trouble and unneeded drama in this discussion.  Technically you contributed nothing.  The only person that seemed to be having trouble with the question is you.  Then a graph of the voltage waveform was posted, what more do you want?  Understand this: Stick to water filtration systems.

MileHigh

[partzman]

I like the idea of introducing a resistor,,

What I would notice is that as the resistance I add goes up so does the voltage,, as it goes down so does the voltage.

So If we did not have all these fancy formulas,, and I had made that observation,, I would want to build a formula to model it

The same thing happens with all "new" things we find,, but I ask myself if the observations themselves were complete and if all of the interactions are appreciated and attributed correctly.

The formula works very close in the real world,, so close that you can make very very precise approximations,, but if not all interactions are appreciated and some that are not are attributed to the wrong interaction the formula might still work just as well but only for predicting a specific outcome.

Let's assume we apply a resistor in parallel to the 5H inductor at T5 and at the same time we remove the 4v ideal voltage source. At that instant in time, what in your opinion would be the voltage and the polarity across this resistor relative to ground with the following values?

R = 1.6666 ohms

R = 10 ohms

R = infinity

In general from this instant in time, what type of slope do we see in the voltage and current waveforms as we continue on in time?

partzman

edit

[partzman]

let me look it up and see what I find,,, then apply it to give the correct values.

man,, making me work

My assumption would be to start with, that at an infinite resistance the voltage would also be infinite,, and then I am assuming that you chose values to make things easy for me

Also I would assume that at 0 resistance the voltage would be 0

Yes, you are correct on all the above

partzman