Heathkit

EC-1 Analog Computer

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    Volumes

    1. Vol 1 Overview & history Context, specifications, and physical orientation that ground Volumes 2–8
    2. Vol 2 Hardware & theory of operation Power supply architecture, 6U8-based op-amp topology, nine amplifier modules, metering and control circuitry, and stage-by-stage schematic walk — grounding all later volumes in measured hardware reality
    3. Vol 3 Patch panel & computing elements Signal routing, op-amp configurations, and computing element reference — bridging Vol 2 power/hardware to Vol 4 problem scaling
    4. Vol 4 Acquisition & restoration How to find, evaluate, strip, recap, retube, and bring up a working EC-1 — prerequisites for Vol 5 (programming) and Vol 6 (advanced demos)
    5. Vol 5 Programming the EC-1 Scaling, patching, and reading results — the complete workflow for turning differential equations into wired solutions
    6. Vol 6 Sample programs & demonstrations Six fully worked analog programs with scaling derivations, patch diagrams, and coefficient tables — cross-referenced to Vol 2 (circuits), Vol 3 (calibration), and Vol 4 (programming theory)
    7. Vol 7 Modern extensions & interfacing Solid-state substitution, data-logging, bench-supply alternatives, patch hardware, and reversibility discipline — bridging 1959 silicon-free design to modern instrumentation
    8. Vol 8 Cheatsheet (field-grade) Quick-reference card set distilling Vols 1–7: tube map, jack/pot map, scaling formulas, patch symbols, power-up sequence, recap checklist, triage tree, and high-voltage safety card

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