{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9736586","patent":{"patent_number":"US-9736586","title":"Condenser microphone","assignee":null,"inventors":[],"filing_date":"2016-12-01T00:00:00.000Z","publication_date":"2017-08-15T00:00:00.000Z","cpc_codes":["H04R","H04R","H04R"],"num_claims":10,"abstract":"A condenser microphone includes a first grounded-plate electron tube having a plate to which a dc power is supplied, and a cathode provided with an output terminal, a self-biasing circuit that is connected to the cathode of the first electron tube and that generates a grid bias voltage of the first electron tube by voltage drop with a cathode current, and a second grounded-cathode electron tube having a plate to which a series circuit of the first electron tube and the self-biasing circuit is connected as a load circuit. A positive phase output from a first condenser microphone unit is supplied to a grid of the first electron tube, and a reverse phase output from a second condenser microphone unit is supplied to a grid of the second electron tube."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Condenser microphone","description":"A condenser microphone includes a first grounded-plate electron tube having a plate to which a dc power is supplied, and a cathode provided with an output terminal, a self-biasing circuit that is conn","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9736586","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-9736586","citation_suggestion":"Patentable. \"Condenser microphone\" (US-9736586). https://patentable.app/patents/US-9736586","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9736586","json":"https://patentable.app/api/llm-context/US-9736586","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:48:39.050Z"}