|
Planar Speaker Asylum Welcome! Need support, you got it. Or share your ideas and experiences. |
For Sale Ads |
Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.
Original Message
coil capacitance
Posted by Arbelos on April 29, 2002 at 13:48:49:
If you look at the factors of coil capacitance you see that it necessitates a potential difference between twoconductor areas, with a dielectric in between.
Adjacent windings, with their prop. low ESR an L between, therefore contribute proportionally less than farther away windings. Conventional coils lay winding beside winding and then start a new 'layer'. So potential difference between these layers is considerably higher than in a foil coil. Actually the very 'organized' winding helps to shield the dielectric from farther windings.
Therefore i suspect that foil coils have rather *less* problems with coil capacitance than conventional coils.If there would be any problem, there would be a sharp impedance peak at a relatively low frequency. I've never seen such in any measurement.