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Electromagnetic effects in high-frequency capacitive discharges …
Abstract. In plasma processing, capacitive discharges have classically been operated in the electrostatic regime, for which the excitation wavelength λ is much …
Back to Capacitor Basics
The SRF characteristic is fundamental for higher frequency applications, particularly radio frequencies. Up to the self-resonant frequency (fr), capacitive reactance dominates, and inductive …
How to Discharge a Capacitor: A Comprehensive Guide for …
How to Discharge a Capacitor: Comprehensive Guide
Discharging a Capacitor (Formula And Graphs)
What is Discharging a Capacitor? Discharging a capacitor means releasing the stored electrical charge. Let''s look at an example of how a capacitor discharges. We connect a charged …
On the Impedance of the High-Frequency Capacitive Discharge …
A low-pressure (ν ≪ ω) capacitive high-frequency discharge with large-area electrodes when it is excited by an electromagnetic field with a frequency from 13 to …
Electromagnetic effects in high-frequency large-area capacitive …
In this regime, capacitive discharges have to be described by an EM model, i.e., the full set of Maxwell''s equations should be solved to address the EM effects. …
Electric field filamentation and higher harmonic generation in very …
Capacitive discharges operating in a very high frequency (VHF) regime, 30–300 MHz, are now becoming popular for plasma processing applications including plasma etching and …
Capacitive Reactance
Therefore, it can be seen from above that as the frequency applied across the 220nF capacitor increases, from 1kHz to 20kHz, its reactance value, X C decreases, from approx 723Ω to just 36Ω and this is always true as …
Nonlinear dynamics of dual frequency capacitive discharges: a global …
The dynamics of dual frequency capacitively coupled plasmas (2f-CCPs) is investigated using an approach that integrates theoretical insight and experimental data. Basis of the analysis is a recently published model which …
Beyond Electrolytic Capacitor: High Frequency On-chip Micro …
Abstract: We report on, for the first time, an on-chip high frequency micro supercapacitor (MSC) featured by ultra-high capacitance density and chip integratability. High-aspect …
Basic Concepts of High-Voltage Pulse Generation
Direct Capacitive Discharge The most common topology for high-voltage pulse generation uses direct transfer from a single or bank of capacitors C to the load, usually of resistive behavior R 0, for biological material, modulated by a normally open switch S3 1998).
7 High-frequency discharges III
7 High-frequency discharges III We start with a comparison of advantages and disadvantages of capacitively coupled discharges, by which it becomes obvious why and …
Simulation of nonlinear standing wave excitation in very-high-frequency asymmetric capacitive discharges…
Simulation of nonlinear standing wave excitation in very-high-frequency asymmetric capacitive discharges: roles of radial plasma density profile and rf power Fang-Jie Zhou 1, Kai Zhao 4,1, De-Qi Wen 2, Jian-Kai Liu …
Physical Properties of a Low-Power Helicon Source Operating on a High-Frequency Discharge with a Capacitive …
Abstract The results of an experimental study of a low-power RF plasma source placed in a longitudinal magnetic field (helicon thruster), when it operates on a capacitive RF discharge and inductive RF discharges with a capacitive component, are presented. A significant dependence of the characteristics of the ion and electron fluxes of …
Weldability of thin sheet metals by small-scale resistance spot welding using high-frequency inverter and capacitor-discharge …
An investigation has been conducted of the weldability of 0.2-mm-thick sheet aluminum, brass, and copper in small-scale resistance spot welding using a high-frequency inverter and a capacitor-discharge power supply. The results have been compared to those of previous investigations using a line-frequency alternating current power supply. The …
Comparison of Low and High Frequency Partial Discharge Measurements on Stator Windings …
Comparison of Low and High Frequency Partial Discharge Measurements on Stator Windings G.C. Stone & H.G. Sedding ... Although both on-line and off-line tests mainly use a high voltage capacitor to detect the PD, the PD measuring systems in about 1 ...
Electric field filamentation and higher harmonic generation in very high frequency capacitive discharges …
Capacitive discharges operating in a very high frequency (VHF) regime, 30–300 MHz, are now becoming popular for plasma processing applications including plasma etching and plasma enhanced chemical vapour depositions (PECVD).
Capacitance in AC Circuits and Capacitive Reactance …
Then we can see that at DC a capacitor has infinite reactance (open-circuit), at very high frequencies a capacitor has zero reactance (short-circuit). Capacitance in AC Circuits Example No1 Find the rms current …
Electronics/Capacitors
In order to find out how long it takes for a capacitor to fully charge or discharge, or how long it takes for the capacitor to reach a certain voltage, you must know a few things. First, you must know the starting and finishing voltages. Secondly, you must know the time constant of the circuit you have. of the circuit you have.
Detection of partial discharges in power capacitors using high frequency current transformers …
A partial discharge detector has been developed which can detect partial discharges in power capacitors with adequate sensitivity by employing high-frequency current transformers (HFCTs). The principle of detection is described, and discharge measurements on capacitor units are reported. For large capacitance objects the …
Radio-Frequency Capacitive Discharges | Yuri P. Raizer, Mikhail …
Radio-Frequency Capacitive Discharges is written by well-known specialists in the field, authors of many theoretical and experimental works. They provide simple and clear discussions of complicated physical phenomena. A complete review on the state of the art ...
High performance broadband capacitive coupler for partial discharge …
Partial discharge (PD) cable field tests require the use of high frequency sensors coupled to the cable for PD apparent charge evaluation. PD sensors can be coupled to the cable by magnetic field, like high frequency current transformers, or by electric field, like capacitive couplers. If high sensitivity and high bandwidth are required, then …