[Isamu]

>flawed hydraulic analogies

I want to say that’s cool, avoid common pitfalls in explanations, but I want to to point out that all analogies fall short, otherwise they would be the same thing, and not an analogy.

That is, if the hydraulic analogy were perfect, then that would mean that electronics would just behave as a fluid and we could teach it an a part of fluid dynamics.

But instead it is an analogy, electronics is not a part of fluid dynamics, there’s just a few similarities that can be used for teaching.

It’s not unusual to teach an imperfect simplistic model at first that you intend to supplement later with more details that break the analogy.

[kazinator]

Water analogies for electronic circuits can go a long way, particularly if you don't need to model inductance, or not fully.

We can use water to explain why capacitors in series have less capacitance!

I'm now thinking whether we could build a water pressure multiplier using the cascade voltage multiplier topology.

https://en.wikipedia.org/wiki/Voltage_multiplier

Use some rubber dams or flexible pipes for the capacitors, one-way backstop valves for the diodes, and then some back-and-forth pumping mechanism to generate water AC. It should work.