STEORN DEMO LIVE & STREAM in Dublin, December 15th, 10 AM

[0c]

the diameter of the core  about 3mm fence wire

Is it a continuous strand of fence wire, or multiple cut strands?

but the current is about 0.8-0.9 A

Peak or average?

Have you tried recovering the spike energy (flyback)?

Have you tried measuring the available voltage/current in the fence wire?

0c

[gravityblock]

FINEMET core’s magnetic properties, “B-H curve” can be controlled by applying a magnetic field during annealing.  There are three types of B-H curves with the Finemet cores.

1) H type: a magnetic field is applied in a circumferential direction during annealing.

2) M type: no magnetic field is applied during annealing.

3) L type: a magnetic field is applied vertically to the core plane during annealing.

On page 2 of the Finemet intro PDF brochure, http://www.overunity.com/index.php?action=downloads;sa=downfile&id=362 in regards to the "L type", you will see the Bsat to be 0.57T when the drive field is H_max=8 A/m while the Bsat is 1.23T when the drive field is H_max=800 A/m.

There are three types of B-H curve squareness; high, middle,and low remanence ratio corresponding to various applications.  With this material, we'll be dealing with hard disc drive tolerances, does this ring a bell?


It is no mistake.


GB

[woopy]

Is it a continuous strand of fence wire, or multiple cut strands?

Peak or average?

Have you tried recovering the spike energy (flyback)?

Have you tried measuring the available voltage/current in the fence wire?

0c

Hi OC

-yes it is a continous wire  (plain) with 3 mm  diameter fence wire

-the voltage go up at the first revolution to about 1 A and than rapidly go down to at max speed 0.78 A. and stay there. (average)

-the kickback spike is only about 40 volts  and i can not light anymore the neon through the 2000volt 1 farad cap as per the previous version. i enclose a picture with only 1 led just for fun.

-I don't see how i can capture the voltage through the core. As you see the core is completely isolated and wounded. Can you be more precise on this point please ?

any propositions for next test ??

thanks

Laurent

[Paul-R]

I'm trying to get my circuit working with a UGN3503 sensor.

For the future, you should note that this device is no longer
being made. I think the replacement is the A1302. (Allegro).

[woopy]

to OC

ouups

i made my post in your quote

excuse me i am not very used with this forum. But i will improve

good night

Laurent