CAPACITANCE FORCE TRANSDUCER Russian patent published in 1996 - IPC

FIELD: force transducers. SUBSTANCE: the transducer uses two circumferentially rigidly coupled similar membranes 1 and 2 with two-sided rigid central sleeves 3 and 4. Sleeve 3 is rigidly installed in a groove of base 6. Rigidly coupled to the sleeves inside the membrane cavity are insulated electrodes 8 and 9 of different diameters of capacitance displacement transducer. Electrode 8 of the smaller diameter is connected to the input, and electrode 9 of the larger diameter - to the output of operational amplifier 13, whose output is connected to the input of comparator 14, which via a thermodependent voltage divider is coupled to the inverse input of operational amplifier 13. Thermodependent resistor 12 is positioned inside the interior of membranes 1 and 2. Supporting restraining arms 11 are coaxially installed in the center on the inner side of sleeves 3 and 4. EFFECT: improved design. 4 cl, 1 dwg