Source: https://guthlabs.ai/docs/instruments/rectifier-dc-power-supply-ripple-calculator/implementation/

instrument implementation / implementation-contract

# Rectifier/DC Power Supply Ripple Calculator implementation

A source-bound implementation contract for Rectifier/DC Power Supply Ripple Calculator; 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**: t5-152

**Effect**: Computation or source lookup only

## Input and validation requirements

Zero filter capacitance makes the ripple denominator vanish, producing an undefined result that requires input rejection. The specification also leaves the transformer-secondary voltage convention unspecified, causing materially different Vpeak, Vdc, and percent-ripple results for the same displayed voltage.

## 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": {
    "transformer_secondary": "12 VAC RMS",
    "rectifier_type": "half-wave",
    "load_current": "0.50 A",
    "filter_capacitance": "10000 µF",
    "line_frequency": "60 Hz"
  },
  "expected_outputs": {
    "Vpeak_ideal_V": 16.9706,
    "Vdc_V": 16.5539,
    "Vripple_pk_pk_V": 0.8333,
    "percent_ripple": 5.0341
  },
  "working": "C=10000 µF=0.010000 F. For half-wave, f=60 Hz. Vripple=I/(f×C)=0.50/(60×0.010000)=0.50/0.60=0.833333 V peak-to-peak. Vpeak=12×sqrt(2)=12×1.41421356=16.970563 V. Vdc=Vpeak−Vripple/2=16.970563−0.833333/2=16.970563−0.416667=16.553896 V. %ripple=100×0.833333/16.553896=5.0341%."
}
````

## Other records

[01**Overview**](<https://guthlabs.ai/docs/instruments/rectifier-dc-power-supply-ripple-calculator/>)[02**Mechanism**](<https://guthlabs.ai/docs/instruments/rectifier-dc-power-supply-ripple-calculator/mechanism/>)[04**Qualification**](<https://guthlabs.ai/docs/instruments/rectifier-dc-power-supply-ripple-calculator/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`