{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8537570","patent":{"patent_number":"US-8537570","title":"Method and apparatus to reduce audio frequencies in a switching power supply","assignee":null,"inventors":[],"filing_date":"2012-05-15T00:00:00.000Z","publication_date":"2013-09-17T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M","H02M"],"num_claims":15,"abstract":"An example controller for use in a power supply regulator includes a switch signal generator, a modulation circuit, and a multi-cycle modulator circuit. The modulation circuit modulates the period of a modulation switching signal when an equivalent switching frequency is greater than a reference frequency and fixes the switching period when the equivalent switching frequency is less than the reference frequency. The multi-cycle modulator circuit enables the switch signal generator to provide a switch signal uninterrupted if the equivalent switching frequency is greater than the reference frequency and disables the switch signal generator for a first time period and then enables the switch signal generator for a second time period when the equivalent frequency is less than the reference frequency. The multi-cycle modulator circuit varies the first time period to regulate the output."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus to reduce audio frequencies in a switching power supply","description":"An example controller for use in a power supply regulator includes a switch signal generator, a modulation circuit, and a multi-cycle modulator circuit. The modulation circuit modulates the period of ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8537570","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-8537570","citation_suggestion":"Patentable. \"Method and apparatus to reduce audio frequencies in a switching power supply\" (US-8537570). https://patentable.app/patents/US-8537570","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8537570","json":"https://patentable.app/api/llm-context/US-8537570","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T20:56:36.517Z"}