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In a ram pump, water flows through a valve slowly gaining momentum until the speed causes the valve to close (because the valve is constructed so that it is closed by pressure, similar to the entry hatch on a submarine). Once the valve closes, the water still has momentum. This momentum pushes the water through a one-way valve to a much higher pressure area which rapidly drains the momentum until there’s none left and the one-way valve closes. In response to the drop in pressure, the original valve opens again and so the cycle continues. This is an electronic adaptation of the ram pump. In this adaptation, the two MOSFETs and resistor emulate the first valve, the diode emulates the one-way valve, and the inductor emulates the inertia of the water.
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