{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9795019","patent":{"patent_number":"US-9795019","title":"Method and apparatus for determining a target light intensity from a phase-control signal","assignee":null,"inventors":[],"filing_date":"2016-03-22T00:00:00.000Z","publication_date":"2017-10-17T00:00:00.000Z","cpc_codes":["H02M"],"num_claims":20,"abstract":"A dimmable ballast circuit for a compact fluorescent lamp controls the intensity of a lamp tube in response to a phase-control voltage received from a dimmer switch. The ballast circuit comprises a phase-control-to-DC converter circuit that receives the phase-control voltage, which is characterized by a duty cycle defining a target intensity of the lamp tube, and generates a DC voltage representative of the duty cycle of the phase-control voltage. Changes in the duty cycle of the phase-control voltage that are below a threshold amount are filtered out by the converter circuit, while intentional changes in the duty cycle of the phase-control voltage are reflected in changes in the target intensity level and thereby the intensity level of the lamp tube."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for determining a target light intensity from a phase-control signal","description":"A dimmable ballast circuit for a compact fluorescent lamp controls the intensity of a lamp tube in response to a phase-control voltage received from a dimmer switch. The ballast circuit comprises a ph","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9795019","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-9795019","citation_suggestion":"Patentable. \"Method and apparatus for determining a target light intensity from a phase-control signal\" (US-9795019). https://patentable.app/patents/US-9795019","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9795019","json":"https://patentable.app/api/llm-context/US-9795019","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:19:59.860Z"}