{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","research_id":"eoa_inverse_innovation_exp12_light_screen_20260805","cell_id":"synchronized_release_dampening__computer_science","search_lanes":{"direct_problem_and_intervention":{"queries":["server rack power restoration simultaneous inrush staggered startup PDU sequencing","data center rack PDU power-on sequencing avoid inrush overload","power-on sequencing servers storage arrays inrush PDU application note"],"source_ids":["SRC2","SRC4"],"no_result_note":null},"synonyms_and_historical_terms":{"queries":["sequential power up delay relay inrush multiple loads rack","staggered inrush current DC loads power sequencing","hot-swap controller backplane inrush power-supply collapse"],"source_ids":["SRC1","SRC3"],"no_result_note":null},"products_practices_and_standards":{"queries":["rack PDU staggered startup sequencing product","server storage system PDU power sequencing requirements","power sequencer hot-swap controller undervoltage lockout"],"source_ids":["SRC2","SRC3","SRC4"],"no_result_note":null},"component_combination":{"queries":["analog RC delayed turn on hot swap controller undervoltage current limit MOSFET","sequential power-up analog RC delay multiple outputs","patent analog staggered power up RC delay multiple loads MOSFET undervoltage"],"source_ids":["SRC1","SRC3"],"no_result_note":null}},"sources":[{"source_id":"SRC1","title":"Inrush Current Reduction Considerations for UCC25800-Q1 in Parallel Startup Applications","publisher":"Texas Instruments","url":"https://www.ti.com/tw/lit/pdf/sluab37","source_type":"OFFICIAL_GUIDANCE","claims_supported":["Simultaneously starting identical devices with capacitive inputs combines their inrush currents and can trigger upstream overcurrent protection.","The application brief expressly describes passive RC circuits connected to one source that make threshold-enable pins trigger at different times.","Its four-device example reports lower peak inrush with RC-staggered startup than with simultaneous startup and identifies startup delay as the tradeoff."]},{"source_id":"SRC2","title":"Limit Inrush Current and Manage Device Power-On Dependencies on GU2 Switched PDUs","publisher":"Geist","url":"https://www.geistglobal.com/sites/all/files/site/60012201_sequencing_applicationnote.pdf","source_type":"FIRST_PARTY_PRODUCT","claims_supported":["A commercial rack PDU sequences outlets after initial energization or unexpected power loss.","The stated purpose includes staggering multiple devices to limit inrush and avoid nuisance overcurrent-protection trips.","The worked rack example starts servers and storage arrays one at a time using distinct per-outlet delays."]},{"source_id":"SRC3","title":"Understanding, Using, and Selecting Hot-Swap Controllers","publisher":"Analog Devices","url":"https://www.analog.com/en/resources/technical-articles/understanding-using-and-selecting-hotswap-controllers.html","source_type":"OFFICIAL_GUIDANCE","claims_supported":["Discharged line-card filter capacitors can demand sudden inrush sufficient to collapse a backplane supply.","Analog hot-swap controllers use MOSFET slew or sensed-current control to limit inrush.","Undervoltage lockout, short-circuit protection, programmable current limits, thermal considerations, and latch-off or retry behavior are established controller features."]},{"source_id":"SRC4","title":"ActiveScale P100 Site Requirements Guide","publisher":"Quantum Corporation","url":"https://qsupport.quantum.com/kb/flare/Content/ActiveScale/PDFs/ActiveScale_P100_Site_Requirements.pdf","source_type":"FIRST_PARTY_PRODUCT","claims_supported":["IT equipment inrush can be several times normal full-load current and can endanger associated electrical equipment.","The guide recommends a PDU that staggers system-component startup so distribution equipment handles one component's inrush at a time.","It specifies three-to-five-second per-device delays for system interconnects, system nodes, and storage nodes, or alternatively requires a PDU rated for simultaneous-start inrush."]}],"problem_evidence":{"status":"SUPPORTED","finding":"The proposed problem is directly visible in rack and backplane sources: simultaneous capacitive-load startup aggregates inrush, can collapse a source or trip upstream protection, and is addressed in computing installations by staggered PDU startup. The evidence supports the conditional transient problem, not its prevalence in every low-voltage rack.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"closest_prior_art":[{"name":"Passive RC staggered startup of parallel capacitive-input devices","source_ids":["SRC1"],"overlap":"One common source feeds several devices; different RC timing paths cross enable thresholds at different times, reducing aggregate inrush and upstream-protection trips without firmware. This substantially matches the proposal's core dispersion mechanism and objective.","remaining_difference":"The example is an isolated-bias-supply application rather than removable computing-rack branch interposers, and it does not disclose the proposal's complete package of per-branch fusing, MOSFET slew limiting, common-bus recovery qualification, tolerance-separated bands, and guaranteed latest-start behavior."},{"name":"GU2 rack-PDU power-on sequencing","source_ids":["SRC2"],"overlap":"After rack-power restoration, distinct branch delays start servers and storage arrays one at a time to limit inrush and nuisance trips.","remaining_difference":"The implementation is a configurable managed PDU rather than autonomous passive analog interposers."},{"name":"Analog backplane hot-swap control","source_ids":["SRC3"],"overlap":"A branch MOSFET provides analog inrush or slew control, undervoltage inhibition, and overcurrent protection for capacitive line-card loads on a shared backplane.","remaining_difference":"The article addresses individual branch admission and protection, not deliberate cross-branch RC-delay dispersion."},{"name":"ActiveScale staggered rack startup requirement","source_ids":["SRC4"],"overlap":"Computing and storage components are started at regular intervals to keep total inrush within distribution capacity.","remaining_difference":"This is a system requirement and recommended PDU practice, not the proposed circuit implementation."}],"prior_art_disposition":"SUBSTANTIAL_COLLISION","contrastive_claim_remaining":"A narrower claim remains testable: on a low-voltage computing-rack emulator, removable analog interposers combining tolerance-separated RC enable bands, identical MOSFET slew limits, and common-bus health inhibition will improve voltage nadir and successful restoration relative to both direct reconnection and equal-delay slew-limited interposers, while every healthy branch starts within a specified deadline. The sources establish the central RC-staggering mechanism and rack objective, so the remaining contrast concerns this particular integrated architecture and control comparison rather than staggered startup itself.","contrastive_claim_falsifier":"Holding source impedance, branch loads, current limits, temperature, and restoration waveform fixed, falsify the remaining claim if unequal-delay interposers do not widen onset-time dispersion, reduce overlapping startup pulses, and improve bus-voltage nadir versus equal-delay interposers, or if any healthy branch misses its deadline, voltage qualification causes repeated reconnects, or electrical or thermal limits are exceeded.","gates":{"adequate_source_search":{"status":"PASS","rationale":"The bounded search covered direct rack restoration, historical hot-swap and sequencing terminology, commercial computing-rack practices, passive RC staggering, voltage qualification, and MOSFET inrush control. Four opened sources from four publisher records include three first-party or official technical sources.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"supported_problem":{"status":"PASS","rationale":"The sources directly connect simultaneous capacitive-load startup with aggregated inrush, source collapse or protection trips, and staggered restoration in racks and parallel power circuits.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"distinct_testable_claim":{"status":"PASS","rationale":"Although the central intervention collides with prior art, the combined bus-qualified interposer architecture and its equal-delay control comparison leave a specific measurable claim; passing this gate does not imply novelty.","source_ids":["SRC1","SRC2","SRC3"]},"bounded_next_test":{"status":"PASS","rationale":"The isolated fused 24 V test with eight emulators, three removable configurations, ten cycles each, a predetermined latest-start limit, and measurements of onset times, current, voltage, resets, temperature, and missed starts is bounded and directly falsifies the remaining claim.","source_ids":["SRC1","SRC3"]},"no_obvious_safety_or_authority_stop":{"status":"PASS","rationale":"No obvious stop applies to an authorized, attended, current-limited low-voltage emulator test using fused rated components, discharge paths, thermal monitoring, and immediate de-energization criteria. The restriction against mains, production racks, certified supplies, and safety-critical loads is essential; production deployment would require equipment-owner and electrical-safety review.","source_ids":["SRC1","SRC3","SRC4"]}},"screen_survival":false,"world_novelty_boundary":"This bounded public-web screen cannot establish world novelty, patentability, market size, expert acceptance, certification, or realized value. It found direct public disclosure of passive RC staggered startup from one source, established managed rack-PDU sequencing for servers and storage, and established analog hot-swap voltage qualification and current limiting. Those findings substantially collide with the proposal's causal core. The precise rack-interposer packaging, combined bus-recovery gate, tolerance guarantees, and bounded-latest-start implementation were not established as a single retained disclosure, but a broader patent, legacy relay-sequencer, standards, and product search could reveal one."}