Class A/B/AB Amplifier Efficiency & Dissipation Estimator implementation

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

t5-219

Effect

Computation or source lookup only

Input and validation requirements

A zero-load input produces an undefined output-power calculation and must be rejected. The Class A efficiency branch is also underspecified because the specification permits both 25% and 50% maxima, while signed versus magnitude output-power conventions produce materially different results.

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": {
    "class": "B",
    "supply_voltage_V": 24,
    "supply_current_A": 1,
    "output_power_W": 12,
    "load_ohm": 8
  },
  "expected_outputs": {
    "theoretical_max_efficiency_percent": 78.54,
    "actual_efficiency_percent": 50,
    "supply_power_W": 24,
    "dissipation_W": 12
  },
  "working": "Theoretical efficiency = (pi/4) x 100 = 0.785398 x 100 = 78.54%. Supply power = 24 V x 1 A = 24 W. Actual efficiency = 12 W / 24 W x 100 = 50%. Dissipation = 24 W - 12 W = 12 W."
}

Other records

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