Re: Another easy? question




Ian Jackson wrote:

In message <fohbc8$bu7$2@xxxxxxxxxxxxxxx>, Brian Morrison

Brian Reay wrote:

NPO is short for Negative Positive Zero (in fact is should really be
NP0 but some use the O of ZerO).

That indicates that the design is such that the various temp. dep.
characteristics (+e and -ve) cancel out. So, such caps are designed
for temp. stability.

Except that sometimes you need to cancel out an opposite drift of
another component (usually a semiconductor, but possibly an inductor)
so actually you need something like an N750 capacitor.

The question was about what was most likely to CAUSE the drift, not
about what you needed to compensate for it.

Thread Drift has taken the subject away from an examination question
about possible causes of drift, to the types of components designed to
mitigate it. Thread Drift happens; get used to it. One still has the
option of replying to the OP's point, although one notes that you did
not so so, leaving one at a loss as the the point of your posting.
--
from
Aero Spike
.



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