Joule Thief 101

[MileHigh]

Here you go Webby:

http://www.engineering-dictionary.org/Stiffness

This is a general term which may be applied to materials or structures. When a force is applied to a structure, there is a displacement in the direction of the force; stiffness is the ratio of the force divided by the displacement. High stiffness means that a large force produces a small displacement. When discussing the stiffness of a material, the concept is the same, except that stress substitutes for force, and strain substitutes for displacement; see modulus of elasticity

http://www.engineering-dictionary.org/modulus_of_elasticity

The proportional constant between stress and strain for material with linear elastic behavior: calculated as stress divided by strain. Modulus of elasticity can be interpreted as the slope of the stress-strain graph. It is usually denoted as E, sometimes known as Young's Modulus Y, or E-Modulus.

Like I said, I am not all hung up on the exact word here, it's understanding the concept, "energy is stored in the wine glass like a compressed spring" and most of the answers did not state this.

MileHigh

[MileHigh]

Wattsup:

The "crap science" term is laughable, and obviously you are not just addressing me, but you are addressing a substantial number of people on the forum.  It makes no sense to dismiss science in the way you are doing.  Also, the majority of the electronics bench work done on the forum starts off using basic electronics as the starting point.  Those people want to understand and master basic electronics as part of their quest for the out of the ordinary.

Your strategy is to skip over the basic electronics and search for the out of the ordinary from the get-go.  And as a result, you look at the ordinary and see it as something out of the ordinary when presumably in all cases so far, that was incorrect.

How does a coil respond when you apply a voltage across its terminals?  The response of the coil will be a current flow, where the current flow is determined by integrating on the voltage with respect to time, and the magnitude of the current flow is also inversely proportional to the inductance.  This is what you and EMJunkie did not understand.  So the question you have to ask yourself is how come both yourself and EMJunkie did not understand this basic fact even though both of you had been on a bench for 10 years?  It because both of you seemingly skipped over learning the basic nuts and bolts about electronics.  It's like getting into a car and trying to drive without wanting to learn which pedal is for the gas and which pedal is for the breaks.

The moral of the story is to back up and make up for lost ground and start fresh and approach your research as a more informed person.

If you choose to dismiss what I am saying, so be it.

MileHigh

[poynt99]

The part where an EMF will appear across the primary before an EMF will appear across the secondary.

Under what circuit conditions and measurement points do you see this occurring?

Please illustrate:
a) frequency of operation
b) inductance and resistance of primary/secondary (50mH?)
c) measurement points and phase condition of scope channels and inversion settings.
d) output resistance of FG or signal driver (50 Ohm?)
e) secondary loading (if any)

The phase relationship between primary and secondary voltage is dependent on frequency, inductance, resistance, and coupling factor, so the above parameters are important in determining the phase.

[MileHigh]

Here you go MH:

http://www.dictionary.com/browse/elastic

The stiffness of the nail precludes it from bending when I strike it with a hammer,, but it does not return the nail to its original shape when I bend it.

Resonance is a special condition that happens all over the universe

https://en.wikipedia.org/wiki/Resonance

Now there you go so that you can learn more about resonance.

Yes Webby, stiffness and elasticity are more or less synonyms, so why are you banging your head against the wall about this?

From your Wiki link, here is the critical phrase that applies to the wine glass:

"Resonance occurs when a system is able to store and easily transfer energy between two or more different storage modes (such as kinetic energy and potential energy in the case of a pendulum)."

And not a single person stated that in their responses to the questions.  I was watching carefully.  Go find an answer and prove me wrong if you don't believe me.

MileHigh

[Pirate88179]

Yes Webby, stiffness and elasticity are more or less synonyms, so why are you banging your head against the wall about this?

From your Wiki link, here is the critical phrase that applies to the wine glass:

"Resonance occurs when a system is able to store and easily transfer energy between two or more different storage modes (such as kinetic energy and potential energy in the case of a pendulum)."

And not a single person stated that in their responses to the questions.  I was watching carefully.  Go find an answer and prove me wrong if you don't believe me.

MileHigh

So, in a manner of speaking, in elecronics, resonance would be comparable to a battery or capacitor in that, you do not get out any more energy than was put into the system.  Would this be more or less correct?

I heard a guy on his youtube video "claim" that when he hits resonance in his circuit, that amps and volts go to infinity.  Now, I am not sure just how you could measure infinity amps or infinity volts...he was just using a DMM.

Bill