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In Reply to: Low DCR - a possible explanation posted by Meister on July 5, 2006 at 13:16:06:
Self resonance comes from the LC circuit that is set up from the inductance in the coils and the capacitance between the wires of the coil. There is always a capacitance between two conductors, and in this case these conductors are neighboring coil turns separated by the wire insulation. Low DCR inductors do not necessarily have a low self resonance, it all depends on the wiring scheme.
It seems to me that any LC circuit set up with a low DCR inductor and a capacitor (like in a filter network) would have a higher Q factor. And a high Q factor doesn't seem to be a good thing because it would work better at some frequencies and worse at others. I haven't done any calculations, but my intuition tells me that a filter would work better if it had a lower Q (high DCR).I hope this doesn't stir things up to much, it's just something I was thinking about.
Best regards,
Dan
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Follow Ups
- Re: Low DCR - a possible explanation - DanK tubes 13:37:13 07/05/06 (4)
- Re: Low DCR - a possible explanation - Joao 22:57:29 07/05/06 (3)
- Re: Low DCR - a possible explanation - mqracing 17:47:40 07/06/06 (2)
- Re: Low DCR - a possible explanation - Joao 23:09:15 07/06/06 (1)
- that's just what I was wondering, perhaps choke.... - radiance 11:14:43 07/07/06 (0)
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