colin wrote:

"Phil Allison" wrote in message
"colin"

I thought you were going to move those 2.2k too.
that poor op amp is sitting there now with its supply all exposed.

** TL071 op-amps do have pretty a fair PSSR - you know.

Yes thats true for DC, the gain of that stage isnt that high either,
but its usualy not shown what the PSRR is for higher frequency,
it usually deteriotes and can be quite bad at higher frequencies.

The supply rails they operate on are clean in typical usage. Over a decade ? ago
I removed all such RC decoupling from my clients' products since all they did
was add cost and create a manufacturing problem since the series Rs have to
mounted off the PCB to appease the safety guys.

Graham