Hydraulic-Electric Analogies: Capacitors and Accumulators, Part 2 (.PDF Download)

Let’s examine what happens in an accumulator as the pressure changes, which is almost always the case in hydraulic circuits. The accumulator handles molecules of fluid much like the way a capacitor handles positive electrical charges. Since the hydraulic pressure in this assessment always exceeds the gas pre-charge pressure, the accumulator operates in its active region. As the pressure increases—say just as it reaches and starts to exceed...

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