Joule Thief 101

[poynt99]

A quick update to end the day;

@ poynt
Didnt get time to build the 1:1 coil today. Wife wanted to do a yard clean,and so most of my day was spent with her in the gardens. Will get it done ASAP.

Got about an hour in the workshop tonight,and shot a short video showing how i can shift the secondaries current phase from 90* lagging the primaries current,to !around! 30* leading the primaries current--with a frequency shift of only .6 of a Hz.

Video is uploading now,but seems very slow tonight. So will post tomorrow morning before work,as it's time for me to hit the hay soon.


Brad

No problem, thanks for the update.

[wattsup]

Hahahahaaa. Wow so many more pages. Must be chock full of good information for the OUers on this forum but the weirdest thing is I can't find anything helpful at all. I did find some good information on how to continue arguing. For that, there is a real goldmine. But substance, totally lacking. Just an eternal quagmire staring @MH who has managed to transform(er)(hichic) himself into a full fledged jerkoff and his cast of merry jerk junkies. So you guys just enjoy the froth and maybe one day you will learn.

I am just amazed how you guys just love to turn in circles every day thinking you are actually putting one foot forward to advance when there is no advancement at all. You suck on @MH's crap all day long and wonder why. I mean how many damn posts do you guys post in one day. Don't you have your own bench works to do? How do you find the time to partake in such insignificant dribble and expect to learn anything is beyond me.

So I will not partake anymore in these threads because I realize you are just a bunch of low levels seeking to join some type of EE jamboree for the blind. So follow everything @MH tells you because deep down he knows how our effects work and how to arrive at OU. Just always listen to what he says and be grateful that he is endowing all of you with his anointed knowledge of nature and it's biggest secrets of effect. He knows everything. He knows when to interject his fat ass into a thread, he knows exactly how to pull your stings, he knows precisely how to disrespect OU benchers. He will always make sure you keep asking the wrong questions while he makes sure you ignore the pertinent ones. Typical.

@tinman

I tried and tried but you missed the boat. Soon you will be able to catch me on my locked thread. No more open discussion with you guys. It's pointless. I just cannot stomach all this crap everyday. Good luck. I'm out of here.

wattsup

[MileHigh]

Wattsup:

Not every thread has to be about OU and this thread was about resonance.

Brad:

I see the same questions but I'll wing it.

1. Up.
2. No change.
3. Down.
4. Resistive load.
5. Transformer driving a resistive load.
6. Your test.

[SeaMonkey]

That says it all right there.  I tried to impress upon Brad that the basic Joule Thief is supposed to have a fixed value for the base resistor and varying the value of the base resistor makes no sense on a fundamental level.  Nor does it change the brightness of the LED for reasons that were explained multiple times, all in the context of the normal operation of the device.

But Brad would have none of it.  From what I can remember he made no attempt to understand any of this.  This manic scanning through all of the postings shows how it is pretty much hopeless.

A "fixed base resistor" in any transistorized circuit, particularly a "switching
circuit" is an industrial trade-off for ease of maintenance.  It is an operational
compromise which is reasonably close to but not at the point of maximum
efficiency.

Experimenters always use a variable base resistor to enable "tuning" of
the circuit under evaluation in order to attain the best possible operational
mode.  The variation in transistor characteristics from one to the next
makes it very difficult to come up with fixed values of resistance.

The Original Joule Thief circuit was made as simple as possible in order to
appeal to the vast audience of technically limited amateur "builders."

Then the Experimenters took up the challenge to make it better.

[NickZ]

  Maybe better but not OU or self running.  Isn't that the point of experimenting with a simple JT on this thread?
Just what is the point?  Or perhaps there is no point, anymore?