David Bengtson wrote: > It really depends on whether you plan to make a bunch of these or if you > are just making one. If you are just making one, I'd suggest a sample > kit of inductors as the easiest thing to do. I'm planning on making a bunch of these, but I still am tending towards the kit of inductors, for the reasons you (and Peter) mentioned. > The other problem with PCB Coils in production is that if you get in a > new batch of PCB material, your inductance could well shift, since the > inductance is dependent on the board dielectric constant. I thought that PCB coils would give me good repeatability, at least after it has been adjusted, and for free in production, but I didn't think of this. I guess it's not what I want, after all... :) Thanks, Gerhard -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist