{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9674923","patent":{"patent_number":"US-9674923","title":"Lighting circuit and lamp","assignee":null,"inventors":[],"filing_date":"2012-02-22T00:00:00.000Z","publication_date":"2017-06-06T00:00:00.000Z","cpc_codes":["H02M","H02M"],"num_claims":8,"abstract":"A lighting circuit (1) includes a controller integrated circuit (U1) for on and off control of a switching element (Q1), a transformer (T1) having a primary coil (T11) that is connected in series to the switching element and a secondary coil (T12), a first voltage supply circuit supplying a voltage that occurs across both ends of the primary coil to an LED module (2), and a second voltage supply circuit supplying a voltage induced in the secondary coil to a power source terminal (Vcc) when the switching element is on. A turns ratio N of the primary coil to the secondary coil satisfies Equation 1, where X1 V denotes a voltage that an AC power source supplies, Y V denotes the maximum value of a power source voltage of the control unit at which normal operation is guaranteed, and Z V denotes the minimum value of the power source voltage."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Lighting circuit and lamp","description":"A lighting circuit (1) includes a controller integrated circuit (U1) for on and off control of a switching element (Q1), a transformer (T1) having a primary coil (T11) that is connected in series to t","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9674923","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-9674923","citation_suggestion":"Patentable. \"Lighting circuit and lamp\" (US-9674923). https://patentable.app/patents/US-9674923","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9674923","json":"https://patentable.app/api/llm-context/US-9674923","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:40:19.448Z"}