Solid State Orbo System

[maw2432]

Pay careful attention to the FINEMET cores used for the toroidal coils mentioned in the patent.  I've been pushing FINEMET as the core material in the other thread over the last few days now.  Metglas may not be the right material.  Both FINEMET and Metglas needs to be tested and the results compared.

Here's an "Intro Finemet brochure" in a PDF file, http://www.overunity.com/index.php?action=downloads;sa=downfile&id=362


GB

GB   Thanks for the brochure. 

Is it possible that Metglas and FINEMET may be the same material? 
Both are listed in the same brochure as if they are just different trade names or companies supplying same products.

A little confusing to me. 

Bill

[gravityblock]

GB   Thanks for the brochure. 

Is it possible that Metglas and FINEMET may be the same material? 
Both are listed in the same brochure as if they are just different trade names or companies supplying same products.

A little confusing to me. 

Bill

Metglas and Finemet are not the same material.  Finemet is a much softer magnetic material due to it's nano-crystalline structure, as described on page 8 of the Finemet brochure.  Metglas appears not to be a nano material (I have yet to find a reference saying metglas is a nano material).

There are three types of B-H curves with Finemet ("H", "L", and "M" type) and can be found on page 2 of the Finemet brochucre.  There are three types of B-H curve squareness with the Finemet; high, middle and low remanence ratio, corresponding to various applications.

Metglas,Inc. is a wholly-owned subsidary of Hitachi Metals America, Ltd.
Finemet is owned by Hitachi Metals, Ltd.

Both Metglas and Finemet are part of the same company but they are different products.  Both have a different manufacturing process.

I agree, it is confusing.

[PaulLowrance]

Pay careful attention to the FINEMET cores used for the toroidal coils mentioned in the patent.  I've been pushing FINEMET as the core material in the other thread over the last few days now.  Metglas may not be the right material.  Both FINEMET and Metglas needs to be tested and the results compared.

Here's an "Intro Finemet brochure" in a PDF file, http://www.overunity.com/index.php?action=downloads;sa=downfile&id=362


GB

My measurements already show that the Metglas MAGAMP core in the "tiny orbo replication" was ~ COP 2.       IMO both Metglas and Finemet will work well. Metglas has higher permeability than Finemet. Finemet has higher saturation. Take your pick. Either way both cores are great.  I've owned both Metglas & Finemet cores for years. Amazing stuff.

btw, I only have time to read a few threads at this forum, which does not include this thread. I only came here because someone linked to GB's post. So I won't see your reply here, only in the Steorn replication thread.

[PaulLowrance]

Metglas and Finemet are not the same material.  Finemet is a much softer magnetic material due to it's nano-crystalline structure, as described on page 8 of the Finemet brochure.  Metglas appears not to be a nano material (I have yet to find a reference saying metglas is a nano material).

There are three types of B-H curves with Finemet ("H", "L", and "M" type) and can be found on page 2 of the Finemet brochucre.  There are three types of B-H curve squareness with the Finemet; high, middle and low remanence ratio, corresponding to various applications.

Metglas,Inc. is a wholly-owned subsidary of Hitachi Metals America, Ltd.
Finemet is owned by Hitachi Metals, Ltd.

Both Metglas and Finemet are part of the same company but they are different products.  Both have a different manufacturing process.

I agree, it is confusing.

Metglas makes a lot of cores that are noncrystalline! The Metglas MAGAMP is nanocrystalline and has a *HIGHER* permeability than any Finemet core, which makes Metglas cores softer than Finemet.

Metglas MAGAMP, which is Metglas 2714A square loop, has the highest permeability of all cores, 1 million -->

http://www.metglas.com/faq/?faq_id=35


btw, Finemet was created by Hitachi. Metglas, Inc. is a wholly-owned subsidiary of Hitachi Metals America Ltd.

Anyhow, try both cores. If you need highest permeability and softest magnetic material, then Metglas is the one. If you need higher Bsat, then Finemet is the one. 

[gotoluc]

Ok  I broke out the 556 and an IRFZ44n to drive the Orbonbon. I also dug out my old RS ProbeScope.
Just a lil demo of the output phase relationship with the magnet polarity.
http://www.youtube.com/watch?v=3gjQpIISvIM

Mags

Hi Mags,

looks good

I also noticed the phase shift when flipping the magnets around.

One thing to note is a FWB for some reason (for me anyways) does not work as well as just using a single diode. Try it to see if you get a difference on the output load if you use just one diode.

The positive hump (can be negative if magnets are switched around) that builds up while the switch is on I think is the magnet flux being pushed by the primary coil pulse since it should not be the primary coils inductance transferring to the secondary since they are at 90 degrees of each other and should not be inductively coupled. Is that how you understand it also?

My best score so far was 95% energy recovery   1% duty and 6vdc input @ 300Hz

I think we're pushing the PM flux out but not fast enough, or enough of it to come back with a vengeance. We maybe saturating the ferrite core before most of the flux can be pushed out

Let me know what you think.

Thanks for sharing.

Luc