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Power and Output transformers for sale

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#81
For George...

Ok>

a little variany - it's good.

I tink amprph core is good where need wide range, like at the output transformer. It's exelent variant.

But I think - that if make good transformer for power - the simple core may be better for it.

I think fort economy monet better use more core mass nd cuper...

More about amprph I will give Anton - the German partner.
He ios an exelent interpreter(translator)...
 
#83
It's not often that cheaper is better...

Then again, I know very little about transformer design, and you are obviously an expert.


"a little variany - it's good.

I tink amprph core is good where need wide range, like at the output transformer. It's exelent variant.

But I think - that if make good transformer for power - the simple core may be better for it."

So, you would recommend the little variant with the standard core for a power toroid? How much would a pair be (300VA, 120V primary at 60Hz, 20-0-20 secondary), shipped to 27511 in the U.S.?

By the way, can you center pot them with epoxy, with a .25 inch hole for the mounting bolt? And I almost forgot, what are the outside dimensions in millimeters?

Thanks.

George
 
#84
Aboyt answers

Now my patner and meneger in Germany ready all for PayPall
and at the nearest time he will help me to make corespondence with you...

For the Peper...

Now I will find the data from Anton, it's help mwe to unerstand the bank-PauPall fees, his help for translation and...

For the Gearge

Now i think how it's may be.. And give you know.
 
#86
some info

“m” is the magnetic permeability.
This permeability is very high and even higher than some permalloys.
Unlike permalloys, amorphous iron is different in that is not susceptible to such changes of their magnetic properties with the mechanical impact.

This iron is expansive, because it requires more sophisticated methods of crystallization of transformer steel.

As known, magnetic properties were determined by magnetic crystals on the surface.
Normal transformer steel, anneal, annealing takes place during the crystallization of steel.

Here, under the influence of the magnetic field in a special chamber under high pressure gas crystallization occurs in such a way that the number of crystals on the surface is much higher than that of ordinary steel.
This induction is like that of ordinary steel, which means that can transmit at a lower voltage distortion in certain dimensions.

Ultrahigh permeability gives to transformer or a choke a very high efficiency.

The same permeability and rolled very thin plates allow the use of transformers without sectioning, which means that you can get very high bandwidth or filtering, given that the network has very high number of interference and harmonics from household appliances, but also the transistor generates and sensitive to the excess of high frequencies.

This induction is unattainable permalloys and other alloys.

High permeability allows a high inductance.
Let's put on the recommended core at 3000 orbits is obtained of 2500 H (henry) at a frequency 20 Hertz.
For example Known Sovtek, Tamura, etc. have inductance of 20-25 Henry at 20 hertz.
These alloys and the products that we manufacture are for the equipment ultra-high-end equipment.
Bandwidth or filtering may be as high megahertz
 
#87
2 George:

As I've understood , you want to do it bifilarry.

But instead of two wires, I propose to use two tows.
Each tow has 3 wires to 3 mm or 2 mm in diameter each.
A wire diameter of 2 or 3 mm - this wire convolute of huge masses of thin copper, similar to the used one in acoustic system.
We anneal the copper by ourselves.


Given the fact that the wire is twisted one - it is easy to bend it and it is easier to put on the core.
Secondly: minimization of parasitic (negative) capacity. And this means that frequency response and the pulse rating expand.

Two tow are intertwined, that’s why they have greater mass, that compensate the frequency and impulse noise..

Two tows, each consists of three wires 2 to 3 mm in diameter, designed for ultra-efficient signal transmission through itself, the ability to instantly transmit energy, minimize losses in material, that positively affects the sound and the properties of the device.

For example, if applied to the diodes 25 IA, which are used in equipment and welding, which we apply to the current 20 Ampere, you immediately hear the difference between usage of 3 mm cable, or diodes, which are now written tens of hundreds of amperes.

Currently in the world, as there is a problem saving of material that affects the existing standards. Now they hold not any critic in terms of high-end-sound.
I can provide this quality of sound just because I have access to old military reserve
 
#88
Wow!

The translation is excellent. However, the brain to which the information is targeted is lacking. Or, at least, the knowledge is lacking. I defer entirely to your recommendation on its obvious technical merit: the small variant with the core material and the winding you recommend is what I'd go for. However, and I should have made more of an issue of this after looking at the jpeg, my enclosure is only 3 inches (76.2 millimeters) high, and I suspect that even the small variant will not fit, even if mounted perpendicular to its core axis.

I'd really like to have one of your transformers (if for nothing else, the bragging value); please tell me I'm wrong. If I'm right, I apologize for wasting your time and the time of your excellent translator.

George
 
#89
For George...

This missage for other people...


What about you.

Your variant will be have the height which you will give me -75 mm
Now I look the core for have this height.

For primary I plan use near 0.8 mm cuper ware (Diameter)
For 20 V - it's will be near (300/40=10A) 3mm.

After technical calculation - I will give you the price soon.

With the best wishes
Ilja
 
#90
Again, thanks for the quick response.

The first good news of the week!

If you can center pot them to within about 6 or 7mm of the top of the transformer, I could go with 70mm high. If not, I'll need a height of 66mm in order to accommodate a top washer and nut. The diameter is not at all critical.

This is what I call great customer service (which is probably still standard in the Ukraine, but becoming increasingly rare in the U.S., at least outside of the diy community).

Thanks.

George
 
#91
Hello again Nafanja,

I did not hear from you regarding the trafo , could you please let me know about it ?

I do really need to get this project going, and it would be great doing business with you if that fits you well.

Best regards,
Pepe
 
#95
Dear Ilja,

thank you very much for the quote. As for the shipping costs, you said 30 euros .... is it going to be 3 kilos of a transformer ???. Perhaps you did not get well the specs, or I did not explain well myself.... but for 30 euros you can send something really big ..!!

Thank you,
Pepe
 
#96
lindamar said:
Dear Ilja,

thank you very much for the quote. As for the shipping costs, you said 30 euros .... is it going to be 3 kilos of a transformer ???. Perhaps you did not get well the specs, or I did not explain well myself.... but for 30 euros you can send something really big ..!!

Thank you,
Pepe
Click to expand...


I'm afraid, but 30 is that I found.
 

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