Ferrite Transformer

A

alok1982

Member

• Nov 30, 2012

• #1

How to choose the SWG (wire gauge) for Electronic (ferrite) Transformer?

 

MikeMl

Well-Known Member

Most Helpful Member

• Nov 30, 2012

• #2

Wire size is based on how many wire turns will fit the core aperture, and on (I^2)R losses.

 

crutschow

Well-Known Member

Most Helpful Member

• Nov 30, 2012

• #3

It's determined by the power the transformer must handle. From that you pick a core size and then wire size based upon the number of turns needed and resistive losses as Mike stated. Sometimes it's somewhat of a iterative process.

 

chemelec

Well-Known Member

• Nov 30, 2012

• #4

For a Transformer, Many Wire Charts will tell you the Wire Gauge Based on the Current at 700 Mils circular area per Ampere.
(A Mil is 1/1000 of an Inch.)

http://chemelec.com/Projects/Wire/Wire-1.png

 

Last edited: Nov 30, 2012

ChrisP58

Well-Known Member

Most Helpful Member

• Nov 30, 2012

• #5

If it's a high frequency switching transformer, you will also need to consider skin and proximity affects in your choice.

 

MOR_AL

New Member

• Dec 1, 2012

• #6

Try this excellent book
TRANSFORMER AND INDUCTOR DESIGN HANDBOOK
COLONEL WM. T. MCLYMAN

 

dr pepper

Well-Known Member

Most Helpful Member

• Dec 1, 2012

• #7

You can reduce skin effect by wither using litz wire or by using 3, or 4 or more thinner wires instead of one thick one.