Capacitance versus voltage (CV) is an important measurement in parametric test. Only CV measurements can reveal several crucial process parameters. © Agilent Technologies, Inc. 2004 4 Semiconductor Capacitance Measurement: An Overview Page 4 Measurement Theory: MOS Device Operation
The analysis of capacitance measurements is best understood by examining the way that resistors are measured. When a digital multi-meter measures a resistance, it uses a constant-current source of some known value, to generate a voltage across the resistor under test.
The unknown capacitor is connected in series with a reference inductor and connected to a sinewave generator. The voltage across this resonance circuit is measured with an AC-voltmeter. The most voltmeters are not suited to measure very low or high frequencies. In most cases a peak detector can fulfill this task.
The obvious extension of the resistance measurement to capacitors is to stimulate the capacitor under test with an AC source. In high-performance LCR meters, one technique used is to find the value of a capacitor does just that.
Meters that use an AC source, such as LCR meters, generally provide a DC bias option to measure the value under this condition. This analysis has shown there are a lot of properties to consider when measuring the value of a capacitor.
The second method describes a measurement that is suitable for measuring on larger capacities and can also determine the internal series resistance (ESR). This method is thus mainly suitable for measuring on electrolytic capacitors. Figure 8 shows the mathematical model with the associated vector diagram in figure 9.
A method for harmonic measurements in EHV systems is proposed that is based on the measurement of currents in capacitor voltage transformers (CVT) and values of …
Resonant circuits of the CVT with a resonant-type damper. (a) Resonant circuit 1. (b) Resonant circuit 2. (c) Resonant circuit 3. (d) Resonant circuit 4.
To address the problem of insufficient real-time periodic calibration using standard transformers, this article proposes an online detection method for CVT measurement …
Fig. 4 shows the reflected voltage waveforms for the SiO 2 capacitor under negative biases ranging from depletion to accu-mulation. It is clear that, under negative bias, there is a faster …
The maximum energy (U) a capacitor can store can be calculated as a function of U d, the dielectric strength per distance, as well as capacitor''s voltage (V) at its breakdown …
The capacitance-voltage (CV) measurement has been one of the most important measurements for investigating the characteristics of the materials and the behavior of the devices.
The following values are measured: the generator voltage V g (5.076 V), the voltage across the capacitor V x (3.242 V), the phase angle between these two voltages α (48.89 °) and the …
I am looking for a method to measure the capacitance of a 2500 V (rated) film capacitor. Multimeter and LCR meter, measure the capacitance in low voltage, therefore it''s …
The capacitance-voltage (CV) measurement has been one of the most important measurements for investigating the characteristics of the materials and the behavior of the devices.
Abstract: As one of the electrical parameters measuring devices, capacitor voltage transformer (CVT) is widely used in the grid with a voltage of 110kV and above. It provides reliable basis …
Capacitance versus voltage (CV) is an important measurement in parametric test. Only CV measurements can reveal several crucial process parameters.
In this paper, we aim to provide an overview of floating capacitance measurement systems including classical and modern measurement methods, such as lock-in …
Abstract: As one of the electrical parameters measuring devices, capacitor voltage transformer (CVT) is widely used in the grid with a voltage of 110kV and above. It provides reliable basis …
Combining the measured arm voltage and the charging/discharging direction of the arm current, the capacitor voltage can be obtained through prediction-modification …
Abstract: Capacitor voltage transformers (CVTs) are measurement devices widely used in high-voltage power grids, and the long-term stability of their measurement …
Working voltage: This indicates the maximum DC voltage the capacitor can withstand for continuous operation and may include an upper-temperature limit. The Electronics Industry Association (EIA) specifies coding …
Fig. 4 shows the reflected voltage waveforms for the SiO 2 capacitor under negative biases ranging from depletion to accu-mulation. It is clear that, under negative bias, there is a faster …
When measuring other capacitors the frequency must be chosen lower than desired what means that only the capacitance can be measured. Two examples are given: The first one is for …
Research the distortion of applying CVT to measure harmonic in the high-voltage power network
Even measuring "simple" passive components such as capacitors is not trivial, if you need high-accuracy results. Learn how to match the technique and instrument to the …
Determination of the input resistance of an oscilloscope from the discharge curve of a capacitor, measurement of the capacitance of coaxial cables, measurement of the relative permittivity of …
To address the problem of insufficient real-time periodic calibration using standard transformers, this article proposes an online detection method for CVT measurement …
lead the wrong judgment. As a result, the measurement of dielectric loss should be not less than 5℃. 4.2. The Influence of the Test Voltage . In general, at its rated voltage range, tan delta …