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Continue to Chat2.1 Hydraulic valves as a metaphor for vacuum tubes https://www.vtadiy.com/book/chapter-2-vacuum-tube-basics/2-1-hydraulic-valves-as-a-metaphor/
2.1 Hydraulic valves as a metaphor for vacuum tubes https://www.vtadiy.com/book/chapter-2-vacuum-tube-basics/2-1-hydraulic-valves-as-a-metaphor/