Electronics > Beginners
Four questions about (Super) capacitors in series
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IanB:

--- Quote from: havewattwilltravel on August 23, 2018, 11:00:39 pm ---My intuition isn't agreeing with physics, but which one of these two is wrong?
--- End quote ---

Intuition is a very bad substitute for science. It is best not to have intuition until you have many years of experience becoming an expert in a field. Until then intuition will just give you wrong answers.
havewattwilltravel:
Is the resistance in the middle is impeding the current flow in the outer capacitors as much as it is impeding the flow in the middle one then? For an electrostatic potential to form, the electrons have to move (assuming a shift in probabilistic charge distribution is movement), so anything that impedes their movement will impede the potential from forming anywhere in the circuit equally?

I wish I just take an equation and use it. But my brain doesn't work that way. Arithmetic never made sense until I took set theory. If they'd started with that, my academic life would have been much easier.
ArthurDent:
Many years ago an instructor told me something very profound: "Things that are in series are in series with each other."
IanB:

--- Quote from: havewattwilltravel on August 23, 2018, 11:33:56 pm ---I wish I just take an equation and use it. But my brain doesn't work that way.
--- End quote ---

Broadly speaking, your brain works the same as any other brain. All brains share the same biological design.

Everything can be learned, if you apply yourself to learning it.
T3sl4co1l:
Equalization isn't a big priority (well, unless you get truly awful caps like Dent's example!), because leakage goes up exponentially above 2.2V or so.

Note that dielectric absorption is extreme on these types: it's not so much a long time constant, as it is a diffusion characteristic (which makes sense, given what these things are).  If you apply 2.5V to a supercap for 10 seconds, then watch it settle out, it'll drop to, probably about half, over the next couple days.  The settling curve has a 1/sqrt(t) form, corresponding to the diffusion property.

Tim
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