electrical.voltage_divider

Three distinct suites: educational examples on the calculator page, this legacy regression count (28/28 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 1.5.1 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓

CVP verification suite

Protocol checks from the Evidence Manifest. Distinct from the legacy regression suite above. Verification revision 2026-10-28.meta-metrics-v2. Calculation version 1.5.1. CVP 1.0.0-proposed. 3/3 golden · 8/8 CVP boundary · 8/8 invalid · 11/11 property · 2/2 metamorphic · 1/1 cross-interface · 6/6 CVP contract. digest ed5aed7734d8.

• Golden (oracle-backed) 3 / 3
• CVP boundary 8 / 8
• Invalid input 8 / 8
• Property 11 / 11
• Metamorphic 2 / 2
• Cross-interface 1 / 1
• CVP contract 6 / 6
• 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 output required declared PASS
• schema valid input executes PASS
• engine success output validates schema PASS
• schema rejects incomplete input PASS
• rest success payload validates schema PASS

Fingerprint sha256:f4fcadc380dd4f9b07e5f6ff751870f905df0f27b5e5af9cd532c9b76c157897

Input schema sha256:0663ccfc519ce176d1634215338c442f4b6b6f5e1961f0e49f06188d6ac947fa · Output schema sha256:e6d562f2f93ce1cf437a532b25eec76c06c605f1eb72d36d7d7000957ba515df · 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.

Tool

voltage-divider

Engine

voltage-divider

Engine build

2026-09-10

Evidence core

2026-09-10T22:48:17.762Z

Rendered

2026-11-10T05:18:41.670Z

Last reviewed

—

Assumptions

• No load on Vout
• DC / resistive
• R1 from Vin to tap; R2 from tap to ground

Limitations

• Unloaded two-resistor divider only
• Canonical input is exactly three of Vin, R1, R2, Vout
• Fewer than three inputs → NEEDS_THREE_INPUTS
• All four inputs → TOO_MANY_INPUTS (not a consistency check)
• Solving R1/R2 requires Vin > Vout > 0 (INVALID_DIVIDER_VOLTAGES otherwise)
• R1+R2=0 when solving Vout → RESISTANCE_MUST_BE_POSITIVE
• Not for loaded dividers, AC reactive dividers, or RF