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Overunity Machines Forum



Thane Heins Perepiteia.

Started by RunningBare, February 04, 2008, 09:02:26 AM

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0 Members and 6 Guests are viewing this topic.

gyulasun

Hi Groundloop

Would you mind checking if there is any reflection of the load to the input coil in this setup?   ;)

Would you short circuit or load heavily L3 while monitoring input power to L1?  (switch SW1 should be closed for this test)

I could not help but ask this till I also obtain some rings.  By the way if I remember well, Amidon cores use color codes and maybe some old Philips cores.  Are your cores old?

Thanks,  Gyula

Groundloop

@hartiberlin,

I guess it is possible to switch in and out the magnetic coupling like you say.
Maybe have a switch on the output also. Then one can switch off the coupling
and switch in the load some nano seconds later. Just theorizing here..........

My first job will be winding (threading) the new coils based on the cores shown
in the picture. Next job will be soldering together an oscillator with feedback.
It will be easy to see if the output > input when connected to a lead acid battery.

O/U or no o/u, it IS a fun hobby to play with electronic.  :D

Groundloop.

Groundloop

@gyulasun,

I did some measurements for you.

When I short out the output (L3) I could NOT see any difference in the input power.
When I measured the current in the shorted middle coil I got higher current with a shorted output than without.
(The middle coil L2 was shorted in both cases.)

The meter I used is NOT very accurate so I can not say that this result is 100% correct. It is only an indication.

BTW: The cores is relative new. Less than 3 years old.

Groundloop.

gyulasun

Quote from: Groundloop on February 09, 2008, 06:15:41 PM
@gyulasun,

I did some measurements for you.

When I short out the output (L3) I could NOT see any difference in the input power.
When I measured the current in the shorted middle coil I got higher current with a shorted output than without.
(The middle coil L2 was shorted in both cases.)

The meter I used is NOT very accurate so I can not say that this result is 100% correct. It is only an indication.

BTW: The cores is relative new. Less than 3 years old.

Groundloop.

Thank you very much.  Very good news!  Indication is just enough for this test I think.

Here is a link to Amidon (in fact Micrometals) toroid cores. They have a wast amount of core types:  http://www.qsl.net/ok1dxd/amidon.htm   Your Yellow/White is for low frequency filters / chokes as it turns out. But your pale Green/Blue I am not sure... 
The best would be to wind 10 or 20 turns on it and insert it into an oscillator for frequency check (unless you happen to have a inductance meter)  and recalculate its inductance from which the permeability could be found out...

rgds,  Gyula

Groundloop

@gyulasun,

Thanks for the link. It seems to me that the yellow/white has a material permeability of 75 and all other colors has a lower permeability.
I think I can safely assume that my green/blue one has a lower permeability. So the green will be the input and oscillator coil. I will make both
the input coil and out coil of two strands of magnet wire. Then I can test the core both "ways".

Groundloop.