Joule Thief 101

[EMJunkie]

One more time, we are back with trying to deal with your stunted communications skills, laziness, and inability to state something properly.

You post two drawings that include scope captures and ask which one is correct.  You are asking about phasing issues were the relationship between the frequency, the resistance, and the inductance is critical for determining the phase, but you don't provide any inductance measurements.

It looks like you may intentionally be hiding the voltage scales so we cannot tell what the waveform amplitudes are.

It says, "air or steel laminated core" on the drawings, so which is it?  I am assuming that it is a steel laminated core but you don't say.

This is the doozie:

First you say:

Then  you say:

So the setup is not the same for the two scope captures.

What does, "oscillating at the resonant frequency of that transformer" mean?

What does, "the field alignment dose not change" mean?

You are so crippled in your communications skills it's almost unbelievable.  You can't punch your way out of a wet paper bag when it comes to describing something in a logical fashion with no ambiguities.

You ask a completely loaded question and you at first don't even state that you changed the setup between the first and second scope capture.

Like usual, when you try to present something just moderately detailed, it's a complete disaster.

MileHigh

Just say "I dont Know" MilleHehehehe!!!

It would be so much easier!!!

   Chris Sykes
       hyiq.org

[EMJunkie]

Brad:

My ass, "think for myself for once."  You will say anything, any damn thing, you are grovelling in the dirt.

Remember when I said that this thread has turned you into a borderline psycho person?  The quote above is a prime example of you degenerating into a borderline psycho that will say or do anything.

I think for myself and you damn well know it.

MileHigh

Clearly scrambling to avoid the topic at hand...


   Chris Sykes
       hyiq.org

[TinselKoala]

Here I've taken a random ferrite-core transformer from my junk stash and connected the Primary in series with a 0.1 ohm non-inductive Ohmite resistor. I then connected it to my F43 function generator set to about 1 kHz sine wave, with the Black output lead connected to the open end of the CSR and the Red output lead connected to the other end of the transformer's Primary. So the CH1 (Yellow) trace is looking at the Vdrop = current through the CSR and Primary. I connected the CH2 (Blue) probe directly across the Secondary of the transformer, so it is looking at the induced voltage across the Secondary. This is equivalent to the schematic Brad has shown, with the exception that I am driving the primary simply with the direct output of the F43 (since it is powerful enough to do so.)

Observe.

Q E D .

[EMJunkie]

Here I've taken a random ferrite-core transformer from my junk stash and connected the Primary in series with a 0.1 ohm non-inductive Ohmite resistor. I then connected it to my F43 function generator set to about 1 kHz sine wave, with the Black output lead connected to the open end of the CSR and the Red output lead connected to the other end of the transformer's Primary. So the CH1 (Yellow) trace is looking at the Vdrop = current through the CSR and Primary. I connected the CH2 (Blue) probe directly across the Secondary of the transformer, so it is looking at the induced voltage across the Secondary. This is equivalent to the schematic Brad has shown, with the exception that I am driving the primary simply with the direct output of the F43 (since it is powerful enough to do so.)

Observe.

Q E D .

TK - 30Hz was Tinman's specified Frequency!!! Your experiment is in error by a factor of: 35.678774651694876139862721955915 X

What is it that youre avoiding? QEW? <<<--- Yes the W is Weirdness!

   Chris Sykes
       hyiq.org

[TinselKoala]

Same setup at 30 Hz:

Q E even more D.