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Public evidence

electrical.led_resistor

Machine-checked verification for calculation version 1.0.0 · tier expert_verified

Open calculator API Capability Download JSON CVP Manifest MCP Review policy

CVP: CVP VERIFIED · CVP protocol 1.0.0-proposed · Engineering assurance· Ideal Vf; no temperature derating · Protocol · Schema · Production report

Declared partition coverage
PASS · 3/3 declared partitions (single-led, multi-led, invalid-domain)
Versions
Calculation 1.0.0 · CVP protocol 1.0.0-proposed
CVP identity
2/2 property · digest 0c6fc27b432a

Verification

Legacy regression suite: 7/7 calculation tests · Production surface contract 4/4

Three distinct suites: educational examples on the calculator page, this legacy regression count (7/7 golden + boundary), and the CVP verification suite below. They are not the same number. Property, metamorphic, round-trip, O3, and interface statuses/checks are recorded in the CVP Manifest . SKIP (0/0) means that suite has no published vectors.

    This calculator CURRENT · Public schema 1.0.0 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓

CVP verification suite

Protocol checks from the Evidence Manifest. Distinct from the legacy regression suite above. Calculation version 1.0.0. CVP 1.0.0-proposed. 2/2 golden · 3/3 CVP boundary · 2/2 invalid · 2/2 property · 1/1 cross-interface · 1/1 CVP contract. digest 0c6fc27b432a.

  • Golden (oracle-backed) 2 / 2
  • CVP boundary 3 / 3
  • Invalid input 2 / 2
  • Property 2 / 2
  • Cross-interface 1 / 1
  • CVP contract 1 / 1
  • Interfaces PASS · UI (SSR) / REST / MCP
  • Interface claim ui-ssr is query-result HTML, not a live browser session.
  • Assurance Engineering
  • release artifacts aligned PASS
  • schema valid input executes PASS
  • engine success output validates schema PASS
  • schema rejects incomplete input PASS

Fingerprint sha256:4066d1070feb0532edaab20a3c8ada04e1767269354ace580460f753c1969ef6

Input schema sha256:48affd725874560e6d754555aa761fe454e1a60bfaae53f033192436713920d7 · Output schema sha256:3aa10d5b0c3d531fdbc2950f67df62bc7633c6e5ef395c30f9cce6e85b2df26e · Build-time SHA-256 digests prove published artifacts agree with each other (release_integrity.scope=workspace). Production attestation GETs canonical URLs twice (public/cached view and origin), including Capability HTML, via npm run attest:production --write (published at /.well-known/calculatorx-production-attestation.json) and fails if the public Capability page advertises a different calculation_version. This is artifact consistency, not an independent immutable release log.

Build & scope

Engine identity and declared limitations.

Tool
led-resistor
Engine
led-resistor
Engine build
2026-09-10
Evidence core
2026-09-06T13:16:40.891Z
Rendered
2026-09-16T22:03:43.722Z
Last reviewed
2026-08-08

Limitations

  • Vs ≤ n·Vf → SUPPLY_TOO_LOW

Sources

Standards and references supporting this tool specification. Methods are listed separately — they are algorithms, not bibliographic sources.

Legacy published checks

Golden and boundary cases from the legacy Evidence JSON. CVP property, metamorphic, round-trip, O3, and interface statuses/checks are recorded in the Manifest — including SKIP when a suite has no vectors.

IDKindStatusDetail
basic-150goldenpassExpected R_ohm=150 · P_R_W=0.06 · Actual n=1 · Vs=5 · Vf=2 · If=0.02 · V_led=2 · R_ohm=150 · P_R_W=0.060000000000000005 · P_led_W=0.04
two-ledgoldenpassExpected R_ohm=300 · V_led=6 · Actual n=2 · Vs=9 · Vf=3 · If=0.01 · V_led=6 · R_ohm=300 · P_R_W=0.030000000000000002 · P_led_W=0.06
supply-lowboundarypassExpected SUPPLY_TOO_LOW · Actual SUPPLY_TOO_LOW
bad-nboundarypassExpected N_MUST_BE_POSITIVE_INT · Actual N_MUST_BE_POSITIVE_INT
boundary-150boundarypassExpected R_ohm=150 · Actual n=1 · Vs=5 · Vf=2 · If=0.02 · V_led=2 · R_ohm=150 · P_R_W=0.060000000000000005 · P_led_W=0.04
property-Rpropertypass150Ω
property-half-Ipropertypasshalf I → 2R