Question on winding toroids...

[Dave]

Does it matter what size wire you use when winding toroids?

Thanks,

Dave

 

[D from BC]

Does it matter what size wire you use when winding toroids?

Thanks,

Dave

Depends...but mostly yes..
Reasons:
heating due to DC resistance
heating due to AC resistance (skin effect, proximity effect)
limited window area
Resonant frequency,Q
To stay within single layer, if needed.
D from BC

 

[default]

Does it matter what size wire you use when winding toroids?

Thanks,

Dave

Of course.

 

[Dave]

Depends...but mostly yes..
Reasons:
heating due to DC resistance
heating due to AC resistance (skin effect, proximity effect)
limited window area
Resonant frequency,Q
To stay within single layer, if needed.
D from BC

Ahh. Okay, so if my primary concern is resonant frequency and higher Q,
would larger guage wire help these? I'm talking about 24 guage rather than
32, or 32 rather than 36. And this would be in a receiver.

Oh, and what is meant by limited window area?

Thanks,

Dave

 

[default]

Ahh. Okay, so if my primary concern is resonant frequency and higher Q,
would larger guage wire help these? I'm talking about 24 guage rather than
32, or 32 rather than 36. And this would be in a receiver.

Oh, and what is meant by limited window area?

Thanks,

Dave

Larger wire means better Q, but multiple wires may be better than a
single solid wire.

Limited window is the physical space available for wire.

 

[Eeyore]

Limited window is the physical space available for wire.

In the case of a toroid, the critical issue usually being the centre hole.

Graham

 

[Dave]

In the case of a toroid, the critical issue usually being the centre hole.

Graham

Ahh. Thank you. That I understand, and it is definetly an issue in this
case.

Dave

 

[Spehro Pefhany]

In the case of a toroid, the critical issue usually being the centre hole.

Graham

As opposed to the curvature of space-time limiting the outside part?


Best regards,
Spehro Pefhany

 

[Michael A. Terrell]

As opposed to the curvature of space-time limiting the outside part?

We all know how difficult that is to deal with.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

 

[Paul Mathews]

Larger wire means better Q, but multiple wires may be better than a
single solid wire.

Limited window is the physical space available for wire.
--

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Time to read up on 'skin effect' and 'proximity effect'. While your at
it, check out 'Litz wire'.
Paul Mathews

 

[Dave]

Time to read up on 'skin effect' and 'proximity effect'. While your at
it, check out 'Litz wire'.
Paul Mathews

Thank you, Paul. I will check those out.

And thank you, D from BC, for the fundamental cut to the chase. For some
reason my news server didn't pick up your second reply, only your first
reply. I suspected large wire meant higher Q, and appreciate your
confirmation of that.

I've got some research to do, and now know more or less where to look. Much
appreciated.

Dave

 

[Eeyore]

As opposed to the curvature of space-time limiting the outside part?

Depends if you need to fit it inside an enclosure mainly. ;~)

Graham