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Dave explains, shows, and measures a potentially big trap with using high value ceramic capacitors.
Is your 10uF capacitor really 10uF in your circuit? You might be shocked!
Those humble X7R caps you think are a "stable" dielectric? think again...
Class II and above ceramic capacitors can vary their capacitance drastically with DC bias voltage level and also the applied AC voltage.
Links:
www.murataamericas.com/murata/...
www.avx.com/docs/masterpubs/mc...
www.ece.ucdavis.edu/vcl/asap/a...
psearch.murata.com/capacitor/p...
www.murata.com/products/design...
www.avx.com/SpiApps
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