Source: https://guthlabs.ai/docs/instruments/inductor-energy-calculator/

instrument / verified-clean

# Inductor Energy Calculator

The current ledger marks this instrument verified clean within the source-bound verification corpus.

Status: **VERIFIED_CLEAN**Lifecycle: **verified-clean**

## Inspectable records

[01**Overview**Purpose and lifecycle](<https://guthlabs.ai/docs/instruments/inductor-energy-calculator/>)[02**Mechanism**Method and assumptions](<https://guthlabs.ai/docs/instruments/inductor-energy-calculator/mechanism/>)[03**Implementation**Binding and validation](<https://guthlabs.ai/docs/instruments/inductor-energy-calculator/implementation/>)[04**Qualification**Evidence and errata](<https://guthlabs.ai/docs/instruments/inductor-energy-calculator/qualification/>)

## Ledger state

The current ledger marks this instrument verified clean within the source-bound verification corpus.

**Area**: Electrical & Electronics Engineering — Circuits, Power Systems, Electronics Lab

**Tranche**: tranche-5

**Evidence ID**: t5-110

**Ledger rows**: 1

No ledger note is attached.

## Review findings

The stated formula is standard and correct. NEEDS_REVIEW is required because the spec names inputs only as L and I without defining their units or conversion behavior. The blank honest_label should be supplemented with an SI-unit requirement such as 'Enter L in H and I in A; result in J.'

### Formula and scope findings

- The formula E = ½LI² is correct for energy stored in an ideal inductor, but the input units are unspecified. E is in joules only when L is entered in henries and I in amperes.

### Unit assumptions

- L must be inductance in henries (H), or converted to H before calculation.

- I must be current in amperes (A); its sign does not affect the result because it is squared.

- E is returned in joules (J).

## Boundary hardening

**BREAK_CLAIMED** · SELF_FLAGGED

Extreme finite inputs overflow ordinary JavaScript numeric arithmetic to Infinity instead of producing a finite result or an explicit range error. The unit probe also exposes a potentially severe 1000-fold error if the mH prefix is not normalized; the formula itself has no genuine regime switch.

## Errata and corrections

No applied erratum is attached to this unique-name record.

## Inspectable example

4 review vectors are recorded. One source-bound sample is shown below.

````
{
  "inputs": {
    "L": 0.002,
    "L_unit": "H",
    "I": 4,
    "I_unit": "A"
  },
  "expected_outputs": {
    "E": 0.016,
    "E_unit": "J"
  },
  "working": "E = ½LI² = ½ × 0.002 × 4² = 0.5 × 0.002 × 16 = 0.001 × 16 = 0.016 J"
}
````

## Related workflows

No source-defined multi-instrument workflow membership is recorded.

## Sources and evidence

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

- `VERIFIED_LEDGER.json · VERIFIED_CLEAN`

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

- `BOUNDARY_HAZARD_CATALOG.json`