Pirate,

There are two changes to a speaker to make it run with "paid for'' energy.

     1. Remove the Ferromagnetic Substance core from the coil that moves the cone.
     2. Remove the magnet (a ferromagnetic substance) and replace it with an air core coil.

I insist, for a given tone... that the modified Non Ferro speaker will take much more energy to run.
This is the energy required to run this particular DYNAMIC MAGNETIC SYSTEM.

If you add the ferro back...(magnet & ferro in coil) you will be using Unpaired Electron Spin and thus less 'paid for' energy.

Again...
              (Non-Ferro Speaker Energy) - (Ferro Speaker Energy) = (Energy contributed by Ferro)

As far as your Caps go.. don't you think shorting a battery to a cap for a short time is akin to  just shorting the battery??
   I bet if you held a 1.5 battery to your tongue (thus shorting it)... you would feel next to nothing in 1 second.
         Now try a 330uf Cap that has been charged for 1 second through the camera circuit...
              I dare ya.. but don't recommend it.  ;o)~
             
      Pirate.. you are an expert at the High Voltage JT circuits...
      One Simple Question...

      Can you light a 13 W CFL with a JT for a significant amount of time that does not use a Ferromagnetic Core?

------------
Minde,

1.5 V Cap as the battery to the camera circuit.. good idea.
All my camera circuits are dismantled or destroyed at this time from trying to get out the transformer.

That's fine that those speakers don't use a ferromagnetic material of High Coercivity (in other words, a magnet)...
          I bet you $100 that there is ferromagnetic material of Low Coercivity (like iron) used in the cores of this setup.

          To check on that you would need to take apart the speaker... is my guess.

Best Regards,
                     The Observer

Observer:

First, I am no expert on anything, just to make that clear.

Second, according to WIKI, ferrite is not a ferro-magnetic material so the answer to your question is yes I can, and have.

When you charge a cap from a AA battery, it is not a short because the battery sees the empty cap as a load.  If it were a short, then the battery would get hot, which it does not.

Bill

Another Gadgetmail type winding

I just happen to have another ferrite core with 1 inch diameter and 0.3 inch thick.  It is yellow in color.  My other ones are green.  It was purchased in Shenzhen when I bought a whole bunch with different sizes for testing.

The results are as follows:
Input peak-to-peak Voltage = 480mV
Input peak-to-peak Current = 136mA (calculated from voltage across a 1 ohm resistor)
Input Power (peak-to-peak estimate) = 0.06528 watts

Output peak-to-peak Voltage = 8.4V
Output peak-to-peak Current = 1.52A (calculated from voltage across a 10 ohm resistor)
Output Power (peak-to-peak estimate) = 12.76 watts

COP  = 195.5

*** This is the best prototype in my possession so far.  I shall try to get identical ferrite core in Shenzhen in the next few days.  After verification from the Universities, a copy will be sent to Stefan and he can send the prize money to Gadgetmail.  Gadgetmail deserves the credit and the money should help his illness.

Pirate,

Ferrite is not Ferromagnetic?

What?

Does it comply with Wiki's definition of ferromagnetism?

QuoteFerromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets,
or are attracted to magnets.

'

More directly... "Does this ferrite you used find itself attracted to a common magnet?"

I find it very hard to believe that something named ferrite wouldn't display ferromagnetic properties.
Ferro essentially means Magnetic Dipoles powered by Unpaired Electrons.

Best Regards,
                     The Observer

Ferrite is a ceramic material and not a metal.  It is an oxide.  Fe2O3.  I always use high permeability ferrite for all of my projects.  It can be magnetized and de-magnetized many thousands of times/sec.  Most of my JT circuits operate in the 20kHz range.

Ferro-magnetic materials refer to materials that contain iron.  Ferrite is iron oxide and a totally different animal.

Bill