MEMM

[PaulLowrance]

mramos,

I forgot to post the link. It seems kingrs bought his metglas core through :

http://www.elnamagnetics.com

Paul Lowrance

[MeggerMan]

Hi Paul and MrAmos,
My core is due to arrive on  the 23rd of October (next Monday).
It is the Metglas AMCC-320 and costs $107 + shipping + $3 handling.
If you are feeling flush then you could opt for the AMCC-500 at $140.

They only like to use couriers as the US postal service was not reliable enough.
The 30V 2.5A variable PSU is due to arrive Thur/Fri this week.

I still need to order the TL494CN chips, and I have just discovered tonight that I only have double sided pre-coated laminates (PCB) left so I need to order up some single sided and some tech sheets for the UV work.

The schematic is nearly complete, just need to do the PCB board layout next.
Its all go at the moment, I'm quite excited about seeing this core in the flesh.

Paul, I think you are right about the input power being just right, according to my FEMM 4.0 simulations, the power needed to get the field to switch was tiny, maybe 10mW on a small core.
5W input on the AMCC-320 I would say was overkill, and should be in the region of say 100mW.
But that is with very small load on the output coils (half the input power I think), the simulation can only go so far with this experiment and I think a practical experiment may see the power input go to 1W.

I have to say I hate this site too, it runs the CPU flat out while the page loads, some crappy javascript running in background, pages sometimes fail, not a nice site...ahh well.


Regards

Rob

[MeggerMan]

Meg simulation with 10mA, 0.137 V (1.3mW) in the bottom right input coil.
US Steel Type 2 core and N37 Neodimium magnets.
Core is 120mm wide and 100mm high and 50mm deep.

[lancaIV]

Hello Rob,
this 107$ for the Metglas AMCC-320,
could you give me the weight and material volume,please !

For the Mukherjee motor-gen invention(DE...) I would need such material,
but in granular/powder kind !

Sincerely
            de Lanca

[PaulLowrance]

Hi mramos,

I might get a free metglass sample. It was supposed to arrive yeserday, but the arrival date changed to Oct. 20th. Not sure if they're playing with me. We'll see. You might be able to get a free sample. Ask for any size sample they have available for testing purposes. If you are not picky and if they have a spare around they might mail it to you.

I'm getting a small 2714AF. As far as efficiency is concerned I think small is better.

Regards,
Paul Lowrance