{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8482939","patent":{"patent_number":"US-8482939","title":"Power supply","assignee":null,"inventors":[],"filing_date":"2007-11-28T00:00:00.000Z","publication_date":"2013-07-09T00:00:00.000Z","cpc_codes":["H02M"],"num_claims":12,"abstract":"A switching “power (100) includes a single, power switching Metal-Oxide-Semiconductor Field Effect Transistor (MOSFET) (Q1) that without any additional transistor provides both self-oscillation and over-current protection. A transformer (Tr1) that is included in a positive feedback path of the MOSFET has a tapped (intermediate terminal 103) auto-transformer winding. A source terminal (102) of the MOSFET is coupled via a current limiting resistor (R2) to a junction terminal between first (n1)and second (n2) windings of the tapped auto-transformer (Tr1). The first winding forms the primary winding of the transformer and the second winding is coupled to a gate terminal of the MOSFET to form a regenerative feedback path. The second winding is direct-current (DC) coupled to the gate terminal to avoid the need for any discrete capacitor in the positive feedback path."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Power supply","description":"A switching “power (100) includes a single, power switching Metal-Oxide-Semiconductor Field Effect Transistor (MOSFET) (Q1) that without any additional transistor provides both self-oscillation and ov","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8482939","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-8482939","citation_suggestion":"Patentable. \"Power supply\" (US-8482939). https://patentable.app/patents/US-8482939","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8482939","json":"https://patentable.app/api/llm-context/US-8482939","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T23:30:53.302Z"}