{
    "title": "Over-unity Homopolar Electrical Generator",
    "inventor_name": "Muammer Yildiz",
    "publication_year": 2004,
    "device_name": "Homopolar Electrical Generator",
    "goal": "Generate electrical power continuously without external grid connection, claiming over-unity energy output.",
    "problem_addressed": "Need for independent, portable power generation in locations without access to electricity grids.",
    "concept_summary": "A portable system that uses two lead-acid accumulators to start a mechanical assembly of gears, starter and feedback dynamos, and homopolar machines. Once started, the device allegedly continues to generate DC and AC power through internal electromagnetic induction, without further external energy input, achieving output energy greater than the initial battery energy.",
    "detailed_description": null,
    "category": "Overunity & Free Energy Claims",
    "principles": [
        "Homopolar induction",
        "Electromagnetic feedback",
        "Mechanical gear amplification",
        "Self-excited dynamo operation"
    ],
    "scientific_domains": [
        "Electrical Engineering",
        "Electromechanics",
        "Physics"
    ],
    "mechanisms_of_action": [
        "Rotating conductive disks (Faraday disks) in magnetic fields",
        "Gear-driven transmission of motion to multiple dynamos",
        "Feedback of generated DC into regulator to sustain motion",
        "Conversion of DC to higher voltage AC via auxiliary dynamos"
    ],
    "materials": [
        "Carbon (charcoal)",
        "Copper wiring",
        "Steel gears",
        "Lead-acid battery",
        "Aluminum/iron housing"
    ],
    "energy_sources": [
        "Initial 12 V DC from lead-acid accumulator"
    ],
    "inputs": [
        "12 V DC start pulse (~=8 s)",
        "Mechanical motion supplied by starter dynamo"
    ],
    "outputs": [
        "12 V-24 V DC",
        "580 V DC",
        "220 V AC",
        "380 V AC",
        "6 kV AC (50 Hz, 18 A)"
    ],
    "claimed_performance": "Reported over-unity: 12.25 V x 2.3 A x 5 h ~= 507 kJ output versus ~=12 V x 8 s input, implying >100 % efficiency.",
    "experimental_evidence": "J.J. Duarte's 2005 test measured ~12.25 V and 2.3 A continuously for 5 h from a sealed box after an 8-second start with a 12 V lead-acid battery.",
    "replication_status": "Only a single, non-peer-reviewed experiment reported; no independent replication documented.",
    "keywords": [
        "over-unity",
        "homopolar generator",
        "free energy",
        "Faraday disk",
        "mechanical generator",
        "self-excited dynamo"
    ],
    "related_technologies": [
        "Faraday disk generator",
        "Homopolar motor",
        "Regenerative braking systems"
    ],
    "controversy_level": "high",
    "confidence_score": 0.6,
    "practicability_score": 0.3,
    "fringe_score": 0.9,
    "evidence_strength": 0.4,
    "risk_score": 0.2,
    "trl_estimate": 3,
    "source_urls": [
        "http://www.muammer-yildiz.com",
        "http://muammeryldz54.spaces.live.com/PersonalSpace.aspx?_c02_owner=1",
        "http://www.rexresearch.com/depalma/depalma.htm"
    ],
    "organizations": [
        "Technische Universiteit Eindhoven"
    ],
    "applications": [
        "Off-grid power for remote villages",
        "Emergency backup for buildings",
        "Power source for vehicles without gasoline"
    ],
    "limitations": [
        "No independent verification of over-unity claim",
        "Unclear internal mechanism (contents of sealed box not disclosed)",
        "Potential measurement errors or hidden energy sources"
    ],
    "open_questions": [
        "What physical process supplies the excess energy?",
        "Can the system be scaled to useful power levels?",
        "Does the device comply with conservation of energy under rigorous testing?"
    ],
    "red_flags": [
        "Extraordinary over-unity claim without peer-reviewed data",
        "Reliance on a single, author-conducted experiment",
        "Lack of transparent disclosure of internal components"
    ],
    "evidence_quotes": [
        "The generated output voltage and current remained fairly constant during the 5 hours test.",
        "Power calculations ... lead to the conclusion that much more energy is delivered by the box ... than the possible initial energy input used to start the process.",
        "Considering the inventors assurance that the apparatus is mainly a mechanical device ... it isnt clear where the measured excess of energy out of the box is coming from.",
        "The apparatus was completely isolated from the environment ... during the whole duration of the measurements.",
        "The start procedure consisted of connecting a small 12V DC lead-acid accumulator ... for more than 5 seconds, but less than 10 seconds."
    ]
}