{"id":1983,"date":"2024-08-04T03:38:12","date_gmt":"2024-08-03T20:38:12","guid":{"rendered":"https:\/\/www.tneutron.net\/industri\/?p=1983"},"modified":"2024-07-31T13:41:19","modified_gmt":"2024-07-31T06:41:19","slug":"capacitive-transducer-function","status":"publish","type":"post","link":"https:\/\/www.tneutron.net\/industri\/capacitive-transducer-function\/","title":{"rendered":"Capacitive Transducer Function"},"content":{"rendered":"

– utilize capacitance change<\/span>
\n \u2022 due to changes in the position of the dielectric material between the two pieces<\/span>
\n \u2022 due to the shifting position of one of the pieces and the area of \u200b\u200bthe face-to-face<\/span>
\n \u2022 due to the addition of distance between the two keeping<\/span><\/p>\n

\"clip_image003\"<\/a>
\n Figure 3.31 Capacitive position sensor: (a) horizontal media shift, (b) rotary shift, (c) shifting plate distance<\/span><\/p>\n

– the capacitance value is directly proportional to the area and is proportional to the distance<\/span><\/p>\n

C<\/i> = 0.0885 d<\/sub><\/i> A<\/u><\/sup><\/i> k<\/i><\/span><\/p><\/blockquote>\n

– quite sensitive but bad linearity<\/span> <\/i>
\n – bridge circuit as in inductive sensor can be used with capacitor connected parallel with high resistance to give DC path for opamp input<\/span> <\/i>
\n – the second alternative changes the capacitance change to the oscillator frequency change<\/span> <\/i>
\n \u2022 center frequency 1 – 10 MHz<\/span>
\n<\/a> \u2022 frequency change for capacitance change is quite small compared to Co capacitance<\/span>
\n\"clip_image009\"<\/a><\/p>\n

\"clip_image011\"<\/a>
\n Figure 3.32 Position sensor use in electronic circuit:<\/span>
\n (a) the capacitance becomes frequency, (b) the capacitance becomes pulse<\/span><\/p>\n

– Inexpensive circuit solution with dual inverter CMOS relaxation oscillator<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

– utilize capacitance change \u2022 due to changes in the position of the dielectric material between the two pieces \u2022<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[1830],"tags":[3781,3782,3783,3784,3785,3786,3787,3788,3789,3790,3791,3792,3793,3794,3795,3796],"class_list":["post-1983","post","type-post","status-publish","format-standard","hentry","category-english","tag-a-capacitive-transducer-is-made-up-of-two-concentric-cylindrical-electrodes","tag-about-capacitive-transducer","tag-advantages-of-a-capacitive-transducer","tag-application-of-a-capacitive-transducer","tag-applications-of-a-capacitive-transducer","tag-capacitance-level-transducer-datasheet","tag-capacitive-and-inductive-transducer","tag-capacitive-displacement-transducer","tag-capacitive-displacement-transducer-pdf","tag-capacitive-force-transducer","tag-capacitive-level-transducer","tag-capacitive-micromachined-transducers","tag-capacitive-micromachined-ultrasonic-transducer-cmut","tag-capacitive-micromachined-ultrasonic-transducer-cmut-array-with-single-layer-graphene-membrane","tag-capacitive-micromachined-ultrasound-transducer","tag-capacitive-micromachined-ultrasound-transducer-cmut-for-immunosensor-design"],"yoast_head":"\nCapacitive Transducer Function - 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