[Phil Allison[_4_]]

PStamler wrote:

Capacitors, unfortunately, don't become low impedance at high
frequencies;


** Yes they do.

since they're made of rolled-up layers of foil and dielectric,
they have an inductive component,


** That is not true.

The foil is connected along the whole length of one side, which cancels inductance completely.


real-world capacitors show an impedance that falls with increasing
frequency up to a point, then bottoms out, and rises as the
frequency increases.


** Real world capacitors have no more inductance than a piece of wire the same length. This is so small, it never matters in audio circuits or even SMPS and the like.

FYI, a typical value is 15nH for leaded types and about 2nH for SMD types.

You have just trotted out a stupid myth that I really hoped had gone away.


..... Phil