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FDC1004: Basics of Capacitive Sensing and Applications
Capacitive sensing is becoming a popular technology to replace optical detection methods and mechanical designs for applications like proximity/gesture detection, material analysis, and …
Variable Capacitor Construction, Working Types and Uses
Variable Capacitor is one of the type of basic capacitors. Based on the capacitance, capacitors are classified under two categories. These are referred to as ''Fixed …
Circuit schematic of the variable capacitor.
Micromachined mechanical variable capacitor is a key component of many microelectromechanical systems (MEMS) devices, such as pressure sensor, accelerometer, …
Micro Electrometers Based on Micromachined Time-Modulated Variable …
Given that C P degrades the variable capacitor electrometer''s responsivity, reducing the parasitics at the interface between the variable capacitor and detection circuit can …
Analysis of capacitor detection methods-EEWORLD
The detection of capacitors is mainly divided into three categories: fixed capacitor detection, electrolytic capacitor detection, and variable capacitor detection. 1. Detection of fixed …
Variable capacitor detection method-SCIENTEK ELECTRICAL
Variable capacitor detection method. A variable capacitor is a capacitor whose capacitance can be adjusted within a certain range. By changing the relative effective area …
Electric field detection using solid state variable capacitance
solid state variable capacitor. Design is supported by circuit and FEA mod-els, illustrating the operation. Theoretical work is verified against results of sensor''s tests performed in DC, AC …
On-chip impedance matching using a variable capacitor
The system includes an on-chip integrated impedance matching circuit (IMC) that comprises: at least one variable capacitor; a control unit that enables tuning of the variable capacitor, …
A MEMS variable capacitor with piezoresistive position sensing ...
The work presented demonstrates a piezoresistive sensing scheme capable of controlling hysteresis effects in a CMOS-MEMS variable capacitor. Potential applications of …
What is a variable capacitor and how to detect and repair it?
The capacitor that can be adjusted is called a variable capacitor. The variable capacitor can be divided into air medium and organic film medium according to different …
Variable Capacitance Sensors
The capacitance sensor is one of the more recent developments in sensor and transducer technology. Its function depends on the characteristics and behavior of the variable capacitor. …
The engineer''s guide to varactor diodes (voltage variable capacitors)
The varactor diode is also referred to as a voltage variable capacitor, or VVC. The diode''s name "varactor" is a contraction for "variable reactor." Similarly, "varicap" is a …
The engineer''s guide to air variable capacitors
How does an air variable capacitor work? Capacitors store electrical energy. The energy (W) in joules is determined by the capacitance (C) and the voltage across the capacitor (V).Specially, for all capacitors W = ½ CV …
Application of variable spacing planar capacitance sensor in ...
In order to detect different non-uniform media, this thesis proposes a variable spacing type planar capacitance sensor, design the sensor hardware circuit system and PCB, …
Simultaneous Identification of Multiple Parameters in Wireless …
The primary variable capacitor, namely the SCC, consists of two constant capacitors: ... Phase detection in Figure 9b is realized by D flip-flop and Exclusive OR (XOR) …
A Robust Capacitance Control Method for Variable Active Capacitor
This article proposes a capacitance control method for the variable active capacitor with improved accuracy and robustness. It applies an iterative learning controller to …
What is a Variable Capacitor?
A variable capacitor is a type of capacitor with an adjustable capacitance, allowing it to be modified within a specific range. By altering the relative effective area of the …
Capacitive Sensors
With a two-plate sensor, the sensor capacitance is the measured variable. Any circuit which mea-sures this capacitance will produce a ratio of the sensor capacitance to a …
Capacitor detection method and experience
Detection of fixed capacitors. A. Detecting small capacitors below 10pF Because the fixed capacitor capacity below 10pF is too small, use a multimeter to measure, only …