{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9826308","patent":{"patent_number":"US-9826308","title":"Capacitive displacement sensing circuit with a guard voltage source","assignee":null,"inventors":[],"filing_date":"2015-08-28T00:00:00.000Z","publication_date":"2017-11-21T00:00:00.000Z","cpc_codes":["H04R","H04R"],"num_claims":17,"abstract":"A common plate is formed in a moveable element of a device, the device having an actuator coupled to drive the moveable element. A first plate and the common plate together form a first capacitance, while a second plate and the common plate together form a second capacitance, both of which varies as a function of displacement of the moveable element. A measurement circuit has an input coupled to the first plate, while an excitation voltage source has an output coupled to the second plate. A guard voltage source has an output coupled to a conductive portion of the device. Other embodiments are also described and claimed."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Capacitive displacement sensing circuit with a guard voltage source","description":"A common plate is formed in a moveable element of a device, the device having an actuator coupled to drive the moveable element. A first plate and the common plate together form a first capacitance, w","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9826308","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-9826308","citation_suggestion":"Patentable. \"Capacitive displacement sensing circuit with a guard voltage source\" (US-9826308). https://patentable.app/patents/US-9826308","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9826308","json":"https://patentable.app/api/llm-context/US-9826308","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:09:48.238Z"}