e:
uit in series
ly records something like 15% change of the current at resonance
e.pdf?dl=0
large inductance in series. The resonance I need to detect is at 360Hz
a robust way)
be small
will stand better out
unknown inductance?
ell...hang a
connect a
an impulse.
second capacitor.
e whole
o see how the
mponents in
eavy :(
ossible to
ible if the
followed by
ld be wrong
AGE1.pdf
ich
H and
shows the impedance did not go to infinite, but there is some extra parasi tics in the model which results in only a small dip on the curve
liohms
You've
eaks
ty small
e idea
sible node.
I think.
be feasible.
hanical resonance I have not access to.
tightly
tage
titors might be lurking around here also. I can say it's a big mechanical s ystem, weighing more than 100kg
r the
nment with other systems that has vibrations we might just end up measuring on that system instead (and precise vibration sensors are expensive, I am trying do do it in cheap electronics)
OK I was going to say try it "the other way around" drive it mechanically and detect it electrically, through L1 with Mike's series cap, maybe.
(I'm afraid to post stuff here sometimes, because customer's may be listening.... I've gotten questions asking if I'd fixed some problem I discussed here.)
George H.