Thane Heins BI-TOROID TRANSFORMER

[woopy]

hi all

just a simple set up to make some basic evaluation. the central L1 (laminated core with very small air gap to the outer toroid ) can be removed from the toroid and the winding can be easily modified .

i have rapidly made some test by directly connecting  the L1 to my basic FG and it seems that when i short the 2 secondaries the L1 current does not significantly increase.

But i need more test. The frequency seems to have a great importance
The problem is that my FG gives only 2 volts and than i work with very low values datas and of course submitted to error.

Have somebody a  SIMPLE circuit to use my FG and increase the voltage to get some more reliable datas?

thanks

and good night at all

Laurent

[lumen]

I wonder if this could be right!
This was setup with a center coil and the outer coils as copper rings to simulate a load.

The only thing that changed between x1 and x2 pics are the two cross cores. They changed from .15" up to .20" in the x2 pic.

Interesting that at the .15 thickness, it seems almost no field even exits the center coil, and the rotation of the field in the outer ring is (at least in my mind) totally unexpected.

I have some nice animated gifs but they are too large to upload.

[teslaalset]

hi all

just a simple set up to make some basic evaluation. the central L1 (laminated core with very small air gap to the outer toroid ) can be removed from the toroid and the winding can be easily modified .

i have rapidly made some test by directly connecting  the L1 to my basic FG and it seems that when i short the 2 secondaries the L1 current does not significantly increase.

But i need more test. The frequency seems to have a great importance
The problem is that my FG gives only 2 volts and than i work with very low values datas and of course submitted to error.

Have somebody a  SIMPLE circuit to use my FG and increase the voltage to get some more reliable datas?

Hi Laurent,

Nice feasibility setup.
Just a hint from my side to test with more power: I use my PC audio speaker set to test as a cheap FG solution that can generate some power at various frequency.

[teslaalset]

I wonder if this could be right!
This was setup with a center coil and the outer coils as copper rings to simulate a load.

The only thing that changed between x1 and x2 pics are the two cross cores. They changed from .15" up to .20" in the x2 pic.

Interesting that at the .15 thickness, it seems almost no field even exits the center coil, and the rotation of the field in the outer ring is (at least in my mind) totally unexpected.

I have some nice animated gifs but they are too large to upload.

Hi Lumen,

You may be able to upload large files according to the tips I gave Broli on page 5, reply #70 of this thread. What app did you use to make these layouts?

[SchubertReijiMaigo]

Have somebody a  SIMPLE circuit to use my FG and increase the voltage to get some more reliable datas?

You can use an amplifier to get more power of your FG. (beware place a limiting resistor betwen you amplifier and your L1 coil because the amplifier could self destroy if the impedance doesn't match): if you have 4 ohms amplifier place at least a 4 ohms DC resistor !!!