Two Coils That Never Touch: How Transformers Work
In short: How two unconnected coils on an iron core, fed with alternating current, step grid voltage up for long-distance transmission and down again for homes and factories, and how Faraday's 1831 iron-ring experiment showed that a changing magnetic field induces current.
A 2:06 short film in the series “How Things Work”, narrated by intellect_voice_01.
Sources used in this film: U.S. Energy Information Administration (EIA), “Delivery to consumers - U.S. Energy Information Administration (EIA)”; BBC Bitesize (BBC), “The National Grid - The National Grid and mains electricity - Cambridge OCR Gateway - GCSE Combined Science Revision - Cambridge OCR Gateway - BBC Bitesize”; Encyclopaedia Britannica, “Electromagnetism - Induction, Faraday, Magnetism | Britannica”; MIT Climate Portal (Massachusetts Institute of Technology), “The Electric Grid”; U.S. Government Accountability Office (GAO), “U.S. GAO - Electricity Grid: DOE Could Better Support Industry Efforts to Ensure Adequate Transformer Reserves”; U.S. Department of Energy, Office of Electricity (OE), “R&D Efforts to Address Transformer Supply”; Nature (Springer Nature), “Solid-State Transformer Technologies and Applications - Latest research and news | Nature”.
Sources used in this film
- U.S. Energy Information Administration (EIA) — Delivery to consumers - U.S. Energy Information Administration (EIA) · View →
- BBC Bitesize (BBC) — The National Grid - The National Grid and mains electricity - Cambridge OCR Gateway - GCSE Combined Science Revision - Cambridge OCR Gateway - BBC Bitesize · View →
- Encyclopaedia Britannica — Electromagnetism - Induction, Faraday, Magnetism | Britannica · View →
- MIT Climate Portal (Massachusetts Institute of Technology) — The Electric Grid · View →
- U.S. Government Accountability Office (GAO) — U.S. GAO - Electricity Grid: DOE Could Better Support Industry Efforts to Ensure Adequate Transformer Reserves · View →
- U.S. Department of Energy, Office of Electricity (OE) — R&D Efforts to Address Transformer Supply · View →
- Nature (Springer Nature) — Solid-State Transformer Technologies and Applications - Latest research and news | Nature · View →
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Sources
- Summary by Intellect · source: U.S. Energy Information Administration (EIA): Delivery to consumers - U.S. Energy Information Administration (EIA)
- Also: BBC Bitesize (BBC): The National Grid - The National Grid and mains electricity - Cambridge OCR Gateway - GCSE Combined Science Revision - Cambridge OCR Gateway - BBC Bitesize
- Also: Encyclopaedia Britannica: Electromagnetism - Induction, Faraday, Magnetism | Britannica
- Also: MIT Climate Portal (Massachusetts Institute of Technology): The Electric Grid
- Also: U.S. Government Accountability Office (GAO): U.S. GAO - Electricity Grid: DOE Could Better Support Industry Efforts to Ensure Adequate Transformer Reserves
- Also: U.S. Department of Energy, Office of Electricity (OE): R&D Efforts to Address Transformer Supply
- Also: Nature (Springer Nature): Solid-State Transformer Technologies and Applications - Latest research and news | Nature
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