Source: https://guthlabs.ai/docs/instruments/inductor-series-parallel-combiner/implementation/

instrument implementation / implementation-contract

# Inductor Series/Parallel Combiner implementation

A source-bound implementation contract for Inductor Series/Parallel Combiner; deployment and executable qualification remain separate.

Status: **VERIFIED_CLEAN**Lifecycle: **implementation-contract**

## Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

**Record owner**: Guth Instruments

**Lifecycle**: verified-clean

**Evidence ID**: t5-128

**Effect**: Computation or source lookup only

## Input and validation requirements

A parallel input containing a zero-valued inductor causes division by zero and must be rejected. Additionally, the input specification does not define a unit convention, so bare values can produce results differing by a factor of 1000 between mH and H.

## Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

## Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

````
{
  "inputs": {
    "topology": "series",
    "inductors": [
      {
        "value": 10,
        "unit": "uH"
      },
      {
        "value": 22,
        "unit": "uH"
      },
      {
        "value": 47,
        "unit": "uH"
      }
    ]
  },
  "expected_outputs": {
    "Leq": 79,
    "unit": "uH"
  },
  "working": "Ls = ΣLi = 10 uH + 22 uH + 47 uH = 32 uH + 47 uH = 79 uH."
}
````

## Other records

[01**Overview**](<https://guthlabs.ai/docs/instruments/inductor-series-parallel-combiner/>)[02**Mechanism**](<https://guthlabs.ai/docs/instruments/inductor-series-parallel-combiner/mechanism/>)[04**Qualification**](<https://guthlabs.ai/docs/instruments/inductor-series-parallel-combiner/qualification/>)

## Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

- `VERIFIED_LEDGER.json`

- `evidence-tranche5/tranche5-results.json`