{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9641023","patent":{"patent_number":"US-9641023","title":"Standby power supply circuit for 2-wire bus intercom system and apparatus thereof","assignee":null,"inventors":[],"filing_date":"2012-04-16T00:00:00.000Z","publication_date":"2017-05-02T00:00:00.000Z","cpc_codes":["H02J","H02J","H04M"],"num_claims":19,"abstract":"The present invention discloses a standby power supply circuit for a 2-wire bus intercom system and an apparatus thereof. The standby power supply circuit is separated into two power supply modules; in which the first power supply module is a power supply to standby circuit and the second power supply module is a power supply to operation circuit; said power supply to operation circuit is switched off by a constant current switch when the device load is at the standby status; and said power supply to standby circuit comprises a constant current circuit whose alternating current impedance is very large. The solutions of the present invention achieve larger alternating current impedance for the 2-wire intercom system, which can offer sufficient power for many device loads both in the conditions of operation and standby statuses."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Standby power supply circuit for 2-wire bus intercom system and apparatus thereof","description":"The present invention discloses a standby power supply circuit for a 2-wire bus intercom system and an apparatus thereof. The standby power supply circuit is separated into two power supply modules; i","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9641023","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-9641023","citation_suggestion":"Patentable. \"Standby power supply circuit for 2-wire bus intercom system and apparatus thereof\" (US-9641023). https://patentable.app/patents/US-9641023","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9641023","json":"https://patentable.app/api/llm-context/US-9641023","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T12:26:43.208Z"}