{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11991806","patent":{"patent_number":"US-11991806","title":"Emergency output circuit for starting LED lamp tubes with leakage protection","assignee":null,"inventors":[],"filing_date":"2022-06-28T00:00:00.000Z","publication_date":"2024-05-21T00:00:00.000Z","cpc_codes":["H02M"],"num_claims":7,"abstract":"An emergency output circuit for starting LED lamp tubes with leakage protection includes a PWM pulse genera tor provided with a PWM chip. When a control terminal detects a power outage, a high level of voltage is instantly output to the PWM chip, and the PWM pulse generator outputs complementary drive PWM rectangular waves with a controllable dead time, which are boosted and filtered into a 250V DC voltage; then, positive and negative alternating square waves are formed through a full-bridge inverter circuit, and two pairs of MOS transistors are turned on alternately through complementary PWM control to generate an AC voltage UAB on an LED lamp tube; and finally, an AC rectangular wave slowly changing into a stable 135V AC output from a 250V DC output is obtained through a correction circuit to replace existing methods to turn on the LED tube, thus effectively simplifying the circuit."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Emergency output circuit for starting LED lamp tubes with leakage protection","description":"An emergency output circuit for starting LED lamp tubes with leakage protection includes a PWM pulse genera tor provided with a PWM chip. When a control terminal detects a power outage, a high level o","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11991806","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-11991806","citation_suggestion":"Patentable. \"Emergency output circuit for starting LED lamp tubes with leakage protection\" (US-11991806). https://patentable.app/patents/US-11991806","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11991806","json":"https://patentable.app/api/llm-context/US-11991806","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T02:40:43.535Z"}