[SI-LIST] Re: Inductance of parallel plate capacitors in series

  • From: Andreas Hahn <andreas.hahn@xxxxxxxxxxx>
  • To: steve weir <weirsi@xxxxxxxxxx>
  • Date: Wed, 12 Dec 2012 11:28:36 +0100 (CET)

Yes, that is it.
I will look up his papers -- is there any one in particular that would 
make a good starting point? I don't quite understand why the change in 
inductance should be frequency dependent (assuming the distance between 
plates is very small compared to any wavelength).


On Wed, 12 Dec 2012, steve weir wrote:

> A------
>    -------B
> ========PCB
>
>
> A------
>   ------
>   ------B
> ========PCB
>
> The capacitance at low and medium frequencies falls in half.
> The low frequency inductance goes up.
> The high frequency inductance is almost entirely unaffected.
>
> I think you should read Istvan's papers on this subject.
>
> Steve
> On 12/12/2012 12:58 AM, Andreas Hahn wrote:
>> If we consider a simple parallel plate capacitor, the parasitic inductance
>> of the plates decreases with the thickness of the dielectric.
>>
>> What happens to the parasitic inductance if we now build a second,
>> identical capacitor on top of the
>> first, such that one plate is now common to the two, and charge the two
>> capacitors in series?
>>
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>
>
> -- 
> Steve Weir
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