On 2014-03-04, Frnak McKenney wrote:
On Mon, 3 Mar 2014 18:26:21 +0000 (UTC), Cydrome Leader wrote:
Ned Simmons wrote:
On Fri, 28 Feb 2014 17:35:40 +0000 (UTC), Cydrome Leader
wrote:

[ ... ]

If you try to model a capacitor with a tank and then use liquids or
gasses to represent a difference in potential of the charge, the
liquid analogy doesn't work.

The best "capacitor" analogue using the "incomplessible fluid"
approach that I've heard described is a divided, two-port tank with a
deformable barrier (think sheet of rubber).

| |
+----+ +----+
| |
| |
| /-----\ |
+-/ \-+ Barrier, partially deformed
| |
| |
| |
+----+ +----+
| |

Pump fluid ito one side and it pushes fluid out the other side... and
"stores" energy in the deformed barrier, up to a maximum which is
reached when the fluid on one side of the barrier fills the tank.
This barrier will, when outside pressures abate, attempt to return to
its equilibrium state, with equal fluid volumes on each side of it.

Pretty good.

And the analogy for current through an inductor is RPM stored in
a flywheel.

Enjoy,
DoN.

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