{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11936288","patent":{"patent_number":"US-11936288","title":"Discharge of an AC capacitor using totem-pole power factor correction (PFC) circuitry","assignee":null,"inventors":[],"filing_date":"2021-12-13T00:00:00.000Z","publication_date":"2024-03-19T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M","H02M","H02M"],"num_claims":32,"abstract":"An AC capacitor is coupled to a totem-pole type PFC circuit. In response to detection of a power input disconnection, the PFC circuit is controlled to discharge the AC capacitor. The PFC circuit includes a resistor and a first MOSFET and a second MOSFET coupled in series between DC output nodes with a common node coupled to the AC capacitor. When the disconnection event is detected, one of the first and second MOSFETs is turned on to discharge the AC capacitor with a current flowing through the resistor and the turned on MOSFET. Furthermore, a thyristor may be simultaneously turned on, with the discharge current flowing through a series coupling of the MOSFET, resistor and thyristor. Disconnection is detected by detecting a zero-crossing failure of an AC power input voltage or lack of input voltage decrease or input current increase in response to MOSFET turn on for a DC input."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Discharge of an AC capacitor using totem-pole power factor correction (PFC) circuitry","description":"An AC capacitor is coupled to a totem-pole type PFC circuit. In response to detection of a power input disconnection, the PFC circuit is controlled to discharge the AC capacitor. The PFC circuit inclu","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11936288","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-11936288","citation_suggestion":"Patentable. \"Discharge of an AC capacitor using totem-pole power factor correction (PFC) circuitry\" (US-11936288). https://patentable.app/patents/US-11936288","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11936288","json":"https://patentable.app/api/llm-context/US-11936288","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T06:58:19.217Z"}