Joule Thief 101

[MileHigh]

Forget it, somebody already mentioned something about spoon feeding and I am not going there.  Spoon feeding and knowledge retention are seemingly opposites.

Think about all of the threads and the thousands and thousands of postings about driving a stand-alone coil at its self-resonant frequency.  I am not even talking about a Joule Thief here.  How many times have you seen Tesla's patent posted?  Think of all of the buzz and speculation about that, the thousands of hours devoted to that subject.

After all of that talk and energy expended and all of the experiments done, have you ever seen any tangible results with respect to that?  I haven't myself.

So you have resonance and self-resonance being discussed for years, and from what I can see not a single tangle result except for those big resonant coils that give off the big electric arcs.  There are even those entertainment companies that rent them out for parties and raves and they modulate them to play music.  There are a ton of clips on YouTube.  Lynyrd Skynyrd anyone?

Hey, take what is a pulse switching circuit and imagine that you can muck up the way it operates and hope for better results.  Why imagine a pulse circuit can "resonate" when apparently you can't even define what that actually means for the pulse circuit, and to take it one step further, you don't even know what resonance actually is?  It's the blind leading the blind.

Why not just design some kind of circuit built around a purpose-designed oscillator and then do the same old tired transistor modulation (instead of switching) of a coil to light an LED?

So forget it for me, this thread has reached a dead end, the bus driver doesn't know how to drive the bus.  Go back to driving school.  I will just sit on the sidelines and see if the bus actually goes anywhere or if the thread dies out with a host of unanswered questions about our favourite subject - good ol' resonance.

[MileHigh]

There is nothing wrong with thinking outside the box.  But there is something seriously wrong with a mutual patting-each-other-on-the-back session when when the actual truth is it's all the just the same old stuff and that stuff is mostly wishful thinking and self-delusion.  We can all just "agree" that resonance is something special and do experiments that prove nothing and still pat each other on the back as if we are accomplishing something.

That's how this thread was going and I just wanted to make it real and of course I got push-back.  How dare I upset the normal order of a mutual agree-off?

Then there is something like the Cone of Silence.  It's the Straitjacket of Agreement.  When somebody says something that many people know is totally wrong those people won't say anything because they are wearing the Straitjacket.  Hence, progress in getting up the learning curve is so stifled that it barely even happens and progress moves as fast as a glacier.  And sometimes the glacier is actually melting and going backwards.

The "box" is also another crutch.  It goes like this, "I don't have to try to learn anything beyond what I pick and choose because I am a bleeding-edge outside-the-box kind of guy."  And often that translates into "I barley have a clue what I am doing and I don't want to listen to you and I don't want to try to learn."  I am in a box of my own making and I am outside-the-box.

So be it.  At least I tried to say something - and for sure it makes the thread more interesting to read because there is some drama mixed in with a technical discussion.  It's not just the boring usual agree-off.

[tinman]

Threads like this really do give others the chance to see the caricature of fellow threaders.
I mean,the last couple of pages alone on this thread have been a hoot

Quote Webby :Tinman answered the wine glass question,, now it is your turn.
Now be specific, and put substance behind your words.

MHs reply: Forget it,

So predictable and expected.
Has anyone here seen MH answer even one of his own question's ?
Of course not,as he knows he cannot answer any of them with the provided information contained within his own questions.

MH ask: how do you determine the resonant frequency of a wine glass?
My reply-- there are a multitude of things that will determine the resonant frequency of that wine glass--there is no one simple MH equation that can be used to calculate that resonant frequency.
What grade of crystal is the wine glass made of MH ?.
What are the specifications on the physical size and parameters of the glass?.
MHs response -->You don't have the slightest clue.
Quote HowStuffWorks- Resonance, An object free to vibrate tends to do so at a specific rate called the object's natural, or resonant, frequency. (This frequency depends on the size, shape, and composition of the object.)
Conclusion--my questions were valid---MHs question was incomplete,and loaded.

Quote MH: Why imagine a pulse circuit can "resonate" when apparently you can't even define what that actually means for the pulse circuit, and to take it one step further, you don't even know what resonance actually is?  It's the blind leading the blind.

Another question he cannot and has not answered him self.

Quote MH: So forget it for me, this thread has reached a dead end, the bus driver doesn't know how to drive the bus.

Seems the self appointed driving instructor dosnt even know what a bus is

Quote MH:  I will just sit on the sidelines and see if the bus actually goes anywhere or if the thread dies out with a host of unanswered questions about our favourite subject - good ol' resonance.

Yes,unanswered questions that the provider of those questions cannot even answer him self--hey MH.

Quote MH: Then there is something like the Cone of Silence.

Yes,one you stick to MH,when it comes time to answer your own question's.


Quote MH: When somebody says something that many people know is totally wrong those people won't say anything because they are wearing the Straitjacket.

Example of totally wrong-->No, an ICE doesn't resonate in any way, shape or form whatsoever
My reply-->There is so many resonant factors in a two stroke engine that can increase it's performance, it's not funny
Good thing im not one that wears the good old straight jacket-hey MH

Quote MH:"Induced current into the inductor" and the "rise of the magnetic field" are the same thing.

Oh dear

So MH--What dose determine the resonant frequency of a wine glass?
Time to put your money where your mouth is.<-- my guess is that you wont even try to answer your own question,as we have seen on every occasion so far.
The driving instructor that dosnt know what a bus is,but happy to ridicule those that cannot drive one.

By the way. Below is a pick of my old rig,taken just before i left for a long haul trip.
I dont think driving the bus is going to be a problem

Brad

[Pirate88179]

I always thought what determined the resonance of a wine glass was the tape that you recorded Ella Fitzgerald singing on...it had to be Memorex.

Actually, striking the wine glass will tell you what its natural resonance freq is.  If you play that frequency at an amplitude high enough, the glass will shatter.  If you place a little wine into the glass, this, of course, will change the frequency so it needs to be "rung" again to determine the new freq.
Placing the wine into the glass after it has shattered is not a good idea.

We learned in physics class that this deals with both constructive and destructive interference.  I get them confused but I think constructive builds upon itself and destructive nulls itself and cancels out?  I don't remember, it was a long time ago.

Bill

PS Tinman, that is one heck of a rig there.  They don't allow those in the US anymore as far as I know.  Doubles yes, triples no.

[massive]

....gotta delurk and reply.
road trains in OZ are friggin mind blowing. theres the TV show outback truckers ,  4 - 5 trailers and nothing but dirt , mud , rivers , hills and goat tracks!!

Ive made push pull with arcing FBT before using search coils .  electrical resonance is input signal is equal to feed back signal , the coil and core finds resonance