differential capacitance


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differential capacitance

[‚dif·ə′ren·chəl kə′pas·əd·əns]
(electronics)
The derivative with respect to voltage of a charge characteristic, such as an alternating charge characteristic or a mean charge characteristic, at a given point on the characteristic.
References in periodicals archive ?
For single-ended applications, the desired output is proportional to the absolute value of capacitance, whereas for differential capacitance, the sensor consists of two capacitors that vary ratiometrically as the sensed quantity changes.
MEMS accelerometers generally operate on a deflection principle, in which a mass deflects closer to or away from an electrode, causing a differential capacitance, he said.
The resulting relationships between electrostatic potential and surface energy (electrocapillary curves), surface charge, and differential capacitance are completely consistent with the traditional sharp-interface models of electrochemical interfaces.
Typical pressure sensor technologies include differential capacitance, piezoresistive or resonant silicon.
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