Joerg wrote:

Chris Jones wrote:

Joerg wrote:


Hello Folks,

See the scope plot and excerpt from the ON Semi datasheet for the
CD4060. The blue trace is at the node RS/Rtc/Ctc, the yellow trace is at
pin 9 which is an output.

Why is there sag at the end of each phase? Rs is 500K and Rtc is 100K. I
mean, that shouldn't be any load to write home about even for a CD
series part.



From the polarity of the step in the waveform (which must be the same on
both ends of the capacitor for reasonable peak currents through the
capacitor), I would say that the yellow trace has to be Pin 10, not Pin
9.


Nope, yellow is pin 9.

Are you *sure* sure ?

(or are you sure the pin numbers on the schematic are right?) It doesn't
make sense if Out2 jumps up in the middle of the scope display and the
other end of the cap jumps down. Since that doesn't make sense, I think
something is wrong here.

Chris