[sdiy] X7R Ceramics for coupling AC audio

[harrybissell at wowway.com]

Large value ceramic caps are unlikely to be made with any reasonable
dielectric (like X7R).  There are stacked monolythic capacitors (many
small capacitors in parallel) that achieve larger values (and larger
sizes).  The large ceramics would be OK if they had a suitable dielectric.

Another point, we are hearing about change of capacitance with DC voltage.
Most coupling circuits have reasonably stable DC operating points, with an
AC small signal across them. They would distort a lot less than the graphs
indicate...

H^) harry



On Thu, 18 Sep 2008 12:56:10 +0100, George Hearn wrote
> ..following on from the discussion regarding the 'sonic qualities of 
> parts' I have begun to question whether large value (10uF) ceramic 
> chip capacitors are a viable option for replacing Electrolytics for 
> coupling AC circuits? Does anyone have any thoughts on this?
> 
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy


Harry Bissell & Nora Abdullah 4eva