Wire stator spacing guidelines? - Page 3

Calvin · 23rd September 2007, 07:16 AM

Hi,

You don´t take the insulation into account! The insulation is not only there physically but electrically too. You can see the effect clearly -as Cpacity already mentioned- in the efficiency of a panel. Look at the epsilon-r-values of the insulator. The higher the value the better the efficiency, because less signal voltage is lost within the insulator (keyword: capacitive voltage divider). So to a certain extend the larger spacing between the insulated wires is made up by the insulation itself. If You simulate wire stators with CAD-progs like FEMM You can see that the insulation supplies for a quite uniform field within the gap between stator and membrane, even when the soacing between the wires is quite large (as e.g. in Audiostatics).
Thats just one important reason why Nylon as well as PVC and PU are quite well usable as stator insulation (higher epsilon-r-value compared to other plastics)

jauu
Calvin

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23rd September 2007, 07:16 AM	#21
Calvin diyAudio Member Join Date: Nov 2004 Location: close to Basel	Hi, You don´t take the insulation into account! The insulation is not only there physically but electrically too. You can see the effect clearly -as Cpacity already mentioned- in the efficiency of a panel. Look at the epsilon-r-values of the insulator. The higher the value the better the efficiency, because less signal voltage is lost within the insulator (keyword: capacitive voltage divider). So to a certain extend the larger spacing between the insulated wires is made up by the insulation itself. If You simulate wire stators with CAD-progs like FEMM You can see that the insulation supplies for a quite uniform field within the gap between stator and membrane, even when the soacing between the wires is quite large (as e.g. in Audiostatics). Thats just one important reason why Nylon as well as PVC and PU are quite well usable as stator insulation (higher epsilon-r-value compared to other plastics) jauu Calvin

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