{
    "title": "Toroidal Power Unit",
    "inventor_name": "Steve Marks",
    "publication_year": null,
    "device_name": "Toroidal Power Unit (TPU)",
    "goal": "Harvest energy from the Earth's magnetic field by resonant coil tuning to produce usable DC power.",
    "problem_addressed": "Low-power generation and the claim of extracting more energy than is input (over-unity).",
    "concept_summary": "A toroidal coil system with multiple collector and control windings is tuned to specific frequencies related to the coil circumference. The interaction of the earth's magnetic field with the electron flow in the wire creates a small initial current \"kick\". By generating several harmonics and keeping the system slightly off the exact resonant frequency, the coil allegedly self-amplifies, delivering DC output that can exceed the electrical input.",
    "detailed_description": null,
    "category": "Overunity & Free Energy Claims",
    "principles": [
        "magnetic field interaction",
        "resonant frequency tuning",
        "self-amplifying harmonic generation"
    ],
    "scientific_domains": [
        "Physics",
        "Electrical Engineering"
    ],
    "mechanisms_of_action": [
        "Earth magnetic field induces a current kick in the coil",
        "Multiple harmonics feed each other to increase net power",
        "Control coils monitor and detune to avoid destructive exact resonance"
    ],
    "materials": [
        "copper wire (multi-strand)",
        "insulating coating (implied)",
        "control circuit components (semiconductors, sensors)"
    ],
    "energy_sources": [
        "Earth's magnetic field",
        "initial electrical input voltage"
    ],
    "inputs": [
        "electrical voltage (hundreds of volts)",
        "frequency control signals"
    ],
    "outputs": [
        "DC current with some ripple",
        "heat (coil heating)",
        "magnetic field disturbances (compass spin)"
    ],
    "claimed_performance": "Device can output several hundred volts at ampere levels, apparently delivering more power than supplied (over-unity).",
    "experimental_evidence": "Video demonstrations show a compass spinning, coil heating to dangerous levels, and a high-value resistor discharge; multiple observers reported burns when touching coil leads.",
    "replication_status": "Demonstrated in video by the inventor; no independent replication reported.",
    "keywords": [
        "toroidal coil",
        "magnetic resonance",
        "over-unity",
        "frequency tuning",
        "earth magnetic field"
    ],
    "related_technologies": [
        "radio receiver",
        "Schumann resonance",
        "magnetic kick devices"
    ],
    "controversy_level": "high",
    "confidence_score": 0.71,
    "practicability_score": 0.28,
    "fringe_score": 0.88,
    "evidence_strength": 0.32,
    "risk_score": 0.79,
    "trl_estimate": 3,
    "source_urls": [
        "https://www.youtube.com/watch?v=cRJHtl6LyP4",
        "https://www.youtube.com/watch?v=tPuhI03ZMR8",
        "https://www.youtube.com/watch?v=W_fRKxz_UNo&nohtml5=False",
        "https://www.youtube.com/watch?v=1nqk8zkmYWQ&nohtml5=False"
    ],
    "organizations": [],
    "applications": [
        "low-cost power generation",
        "energy harvesting from ambient magnetic fields"
    ],
    "limitations": [
        "requires precise frequency control",
        "coil can overheat and become dangerous",
        "lack of independent verification"
    ],
    "open_questions": [
        "Exact physical mechanism that allows net energy gain",
        "Scalability to useful power levels",
        "Long-term durability of the coil system"
    ],
    "red_flags": [
        "Over-unity claim without peer-reviewed data",
        "High voltage and burn hazards",
        "Reliance on anecdotal video evidence"
    ],
    "evidence_quotes": [
        "The compass will spin up when turned on.",
        "The inrush of current through the filament interacts with the earth's magnetic field to produce a small kick.",
        "You can see that you can get more out of a piece of wire than you put in to it.",
        "Several people were badly hurt during demonstrations; one person was burned and needed medical attention.",
        "The fire discharge everyone sees in the video is after the output of the device is switched through a large high value resistor!"
    ]
}