Air Core Inductors

[biferi]

I was going to ad this to my post about Ferrite Inductors but I do not see a TAB at post or udate thread.

Is an Air Core Inductor used for Low Inductance?
I know they can be used as Fillters.

 

[Harald Kapp]

A little bit of Googling goes a long way: http://info.ee.surrey.ac.uk/Workshop/advice/coils/air_coils.html