Hi - I hope I'm not speaking out of turn here. I'm new to this community and was just browsing the site. I noted that in the inductor sizing equations here: http://www.allaboutcircuits.com/vol_5/chpt_1/6.html
you state that "Wheeler's spiral formula is 1% accurate for c>0.2" but make no reference to c. From here:
http://microblog.routed.net/wp-content/uploads/2008/10/pancakewheel.pdf
and here:
http://info.ee.surrey.ac.uk/Workshop/advice/coils/air_coils.html
c refers to the winding thickness of a multi layer coil. Should your reference be updated?
Steve.
P.S. I know this is nit picking, but useful is spelled with one 'l'...
you state that "Wheeler's spiral formula is 1% accurate for c>0.2" but make no reference to c. From here:
http://microblog.routed.net/wp-content/uploads/2008/10/pancakewheel.pdf
and here:
http://info.ee.surrey.ac.uk/Workshop/advice/coils/air_coils.html
c refers to the winding thickness of a multi layer coil. Should your reference be updated?
Steve.
P.S. I know this is nit picking, but useful is spelled with one 'l'...