capacitor pulse continuety question

[john23]

Hello, When i will build it in my lab and i will turn on the power supply.
I have a pulse goint from R10 into C4.
capacitor has the tendency to be continues with voltage , so id there is a voltage jump on one side it will transform to the other side .
So the quetion is about the capacitor.
When we send a pulse on P12 How C4 will behave?
What is the exact physical behavior of this capactior C4 in this situation?
Thanks.

[PGPG]

capacitor has the tendency to be continues with voltage , so id there is a voltage jump on one side it will transform to the other side .
So the quetion is about the capacitor.
When we send a pulse on P12 How C4 will behave?

If you measure voltage referencing it to GND than capacitor connected to GND can't transform pulse to the other side as the other side is GND and measuring GND against GND you will have 0V (until we don't consider GND connections impedance).
During fast pulse at P12 you can ignore resistors here. C1 is loaded through Q1 b-e diode. V1 source dV/dt and its internal resistance and C1 internal resistance and Q1 serial resistance of b-e diode will be factors limiting the current.
Circuits should not be designed the way then on power on such big capacitors are loaded throug b-e junction.

[john23]

Hello , What about the situation when i move C4 to be parralel to R10.
There is a basic law regarding capacitors shown below.
"The principle of continuity of capacitive voltage says: In the absence of infinite current, the voltage across a capacitor cannot change instantaneously."

looking at the following situation how does the capacitor acts?
one leg feel rise of zero to 12V what does the other leg get because of that and why?