{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11528789","patent":{"patent_number":"US-11528789","title":"Negative injection for power factor correction circuit performance enhancements","assignee":null,"inventors":[],"filing_date":"2021-08-04T00:00:00.000Z","publication_date":"2022-12-13T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M","H02M","H02M"],"num_claims":20,"abstract":"A negative injection circuit is coupled to a power factor correction (PFC) controller of a power supply system and includes a downshifter configured to downshift a ground signal to generate a negative voltage signal, a variable impedance coupled between the downshifter and the PFC controller, and configured to inject a negative injection voltage into a voltage sampling input of the PFC controller, the variable impedance including a first current limiting resistor and a second current limiting resistor coupled in series with one another and between the downshifter and the voltage sampling input of the PFC controller, and a bypass switch configured to selectively short across the second current limiting resistor in response a range selection signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Negative injection for power factor correction circuit performance enhancements","description":"A negative injection circuit is coupled to a power factor correction (PFC) controller of a power supply system and includes a downshifter configured to downshift a ground signal to generate a negative","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11528789","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-11528789","citation_suggestion":"Patentable. \"Negative injection for power factor correction circuit performance enhancements\" (US-11528789). https://patentable.app/patents/US-11528789","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11528789","json":"https://patentable.app/api/llm-context/US-11528789","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T09:24:09.569Z"}