{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9816737","patent":{"patent_number":"US-9816737","title":"DC power-supply device and refrigeration cycle device","assignee":null,"inventors":[],"filing_date":"2013-10-29T00:00:00.000Z","publication_date":"2017-11-14T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M","H02M","H02M","H02M","H02M","H02M","H02M","H02M","H02M","H02M"],"num_claims":13,"abstract":"A DC power-supply device that suppresses an excessive inrush current, can prevent breakage of elements and burnout of circuits, and converts alternating current from a three-phase AC power supply into direct current to supply it to a load, includes a rectifier circuit having a reactor connected to input or output side thereof and rectifying the alternating current from the three-phase AC power supply; first and second capacitors and connected in series between output terminals to the load; a charging unit selectively charges one or both of the first and second capacitors; and a control unit controlling the charging unit. When charging of the first and second capacitors is started, the control unit reduces the on-duty ratio, and then, until the on-duty ratio during a normal operation is reached, the control unit executes control such that the on-duty ratio is gradually increased as a predetermined time period is passed."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"DC power-supply device and refrigeration cycle device","description":"A DC power-supply device that suppresses an excessive inrush current, can prevent breakage of elements and burnout of circuits, and converts alternating current from a three-phase AC power supply into","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9816737","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-9816737","citation_suggestion":"Patentable. \"DC power-supply device and refrigeration cycle device\" (US-9816737). https://patentable.app/patents/US-9816737","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9816737","json":"https://patentable.app/api/llm-context/US-9816737","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:07:31.960Z"}