Increased capacitor current effect

[TinselKoala]

No, no channels are inverted.

But I did discover that the "dips" in the Yellow trace (Cap2) are apparently reflections due to a faulty cable connector. I changed to a different patch cable and they went away. Now the Cap2 trace is a steady 88-92 mV all the way across. See the first scopeshot below.

The second scopeshot is with the Diode shorted. Note that I had to change the vertical scale of the Cap2 trace to keep it on-screen.

[TinselKoala]

When I remove the C1 capacitor entirely, the Cap2 trace drops to baseline. So I changed to a different C1 capacitor (still 1uF) and the Cap2 trace goes back up to 88-92  mV. 

I changed the Diode from 1n5817 (Vf =0.185V) to a 1n60 germanium diode (Vf =0.245 V) and the Cap2 trace went up by about 10 mV to 100 mV.

[TinselKoala]

I changed from the DP-101 pulse generator (risetime 13 ns at this configuration) to the F43 FG, at the same frequency and pulse width and voltage settings as near as I could manage, and the Cap2 trace went down to 68-72 mV. The F43 has a much slower rise and fall time of around 40-50 ns. 

First shot below is with the DP-101, second shot with the F43.

[ayeaye]

DS1Z_QuickPrint8.png oscillates. What made me to first think about that, was an oscilloscope image of some capacitors in series, charging with high frequency pulse. The voltage taken from somewhere in the middle of them, oscillated. This made me to think, maybe the current goes first greater than it should, then compensates. The only way i can figure capacitors can oscillate without inductor.

Today they used to question, how can you doubt in already well-established things in science. Some go even so for that they doubt in the theory of relativity, fortunately you don't yet. This is a very interesting thinking, a very weird phenomenon. In ancient Greece there were theories as well, but people were encouraged to doubt in them.