Monday, June 24, 2013

Decoupling Caps

Decoupling Caps - Harry Ott:


There are a large number of people that use and/or recommend the use of multiple capacitors of different values.  My recommendation is don't!  The problem with this approach is that the different value capacitors produce an anti-resonance, or cross-resonance (which produces an impedance peak).  Not a desirable result!  For those still considering the use of different value capacitors I would suggest that you look at the Bruce Archambeault and Clayton Paul papers referenced below.  The Bruce Archambeault paper in particular gives measured values of decoupling effectiveness, using a network analyzer.”




No comments:

Post a Comment