Are there tables and/or equations for designing toroids? For example,
I have some ferrite cores here, and I want to know how many turns on
what kind of core to get the inductance I need. (Calculating Q would
be nice, too.)

Tnx,

--
Dave * N3WTK (DM04xf) * http://isi.mtwilson.edu * VE

"David Snyder Hale" wrote in message
...
Are there tables and/or equations for designing toroids? For example,
I have some ferrite cores here, and I want to know how many turns on
what kind of core to get the inductance I need. (Calculating Q would
be nice, too.)

Tnx,

Dave * N3WTK (DM04xf) * http://isi.mtwilson.edu * VE

For a real quick calculation, you can use the Java Applet of GM0RWU
http://www.see.ed.ac.uk/~jwp/radio/design_toroid.html

gb

David Snyder Hale wrote:
Are there tables and/or equations for designing toroids? For example,
I have some ferrite cores here, and I want to know how many turns on
what kind of core to get the inductance I need. (Calculating Q would
be nice, too.)


There's a very nice little program at:
http://www.dl5swb.de/html/mini_ring_core_calculator.htm

It has probably the most complete built-in library of cores and
dimensions, and does just about everything.

It doesn't contain Q data, but these only exist for certain cores, and
no calculation is required anyway - just read the graphs, which are on
the web.


--
73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek

Magnetics Inc. www.mag-inc.com also has downloadable freeware on their
site. They have recently redone their catalog also.

"David Snyder Hale" wrote in message
...
Are there tables and/or equations for designing toroids? For example,
I have some ferrite cores here, and I want to know how many turns on
what kind of core to get the inductance I need. (Calculating Q would
be nice, too.)

Tnx,

--
Dave * N3WTK (DM04xf) * http://isi.mtwilson.edu * VE