Joule Thief 101

[MileHigh]

Here are some college sayings:

- The derivative of sine is cosine and the derivative of cosine is negative sine. -

- The first derivative of 'e' to the 'x' is 'e' to the 'x'. -

[MileHigh]

Wow, look at this so cool:  Just like sitting in class with a virtual blackboard.

https://www.khanacademy.org/math/differential-calculus/taking-derivatives/derivatives-of-common-functions/v/derivatives-of-sin-x-cos-x-tan-x-e-x-and-ln-x

'e' is just so damn cool!  (And you see it in action on your scope display about 75% of the time when you are playing with your circuits.)

[EMJunkie]

Here is a video showing the effects of an oscillating magnetic field against transformer action.
How dose the oscillating magnet allow so much more power dissipation,while reducing the power to the source that drives the oscillating system.

Comments and thoughts welcome from all.


https://www.youtube.com/watch?v=mlb79xSh93w

Brad

Brad, you have shown without a doubt, what I have said to be true!

Adding the Pendulum / Oscillating with Magnet's on it, has bought added Reactance into the Circuit through Mutual Coupling.

Which as I have already stated many times is part of Passive Circuit Analysis and nothing to do at all with Faraday's Law of Electromagnetic Induction.

Faraday's Law of Electromagnetic Induction is fully able to do its job with, or without Reactance

Again, as I have sated many hundreds of times now, Faraday's Law of Electromagnetic Induction has absolutely nothing to do with the Phase Angle differences between Current (I) and Voltage (V)   -   It is the responsibility of  Reactance

And So, TK was very wrong when he stated this:

Brad, your scope shot shows the expected 90 degree phase difference as predicted by Faraday's Law: The induced (negative) EMF in the second coil is proportional to the _time rate of change_ of the inducing magnetic field from the first coil.

And by its very definition, Faraday's Law of Electromagnetic Induction predicts E.M.F and NOT Phase Differences of Voltage and Current.

   Chris Sykes
       hyiq.org

[EMJunkie]

Twas spelt like this when I went to school !! 

"Coulomb's law, or Coulomb's inverse-square law"

Typo?

Cheers Grum.

Heir Heir - Nice Catch Grum!!!

   Chris Sykes
       hyiq.org

[EMJunkie]

And still silence from those that should not!!!

   Chris Sykes
       hyiq.org