Low Voltage Shocks Have a Significantly Higher Tilt of the Internal Electric Field Than Do High Voltage Shocks

1995 ◽  
Vol 18 (1) ◽  
pp. 214-220 ◽  
Author(s):  
JAMES E. BREWER ◽  
MICHAEL A. TVEDT ◽  
TED P. ADAMS ◽  
MARK W. KROLL
Keyword(s):  
Electric Field ◽  
High Voltage ◽  
Low Voltage ◽  
Internal Electric Field

Low Voltage Electrohydrodynamic Micropump for Cooling of Electronic Device

2011 ◽  
Author(s):  
Comlan Fandohan ◽  
A. G. Agwu Nnanna
Keyword(s):  
Electric Field ◽  
Flow Rate ◽  
High Voltage ◽  
Electric Potential ◽  
Low Voltage ◽  
Electronic Device ◽  
Dielectric Material ◽  
Maximum Velocity ◽  
High Heat ◽  
Dielectric Fluid

To dissipate the high heat generated in microprocessors and electronic components, electrohydrodynamic (EHD) micropumps are often used. An EHD system involves the interaction of a flow field and an applied electric field; specifically, an ion-drag EHD micropump uses the interaction of an electric field with electric charges, dipoles or particles embedded in a dielectric fluid in order to generate a net flow. These EHD micropumps, require high voltage to drive the fluid, and as a result have not gained wide application. This study presents a systematic analytical method of reducing the high voltage requirement. The approach is to select a dielectric material such that flow rate is maximized with low electric potential. It is known that the dielectric maximum velocity is a function of the dielectric potential, dielectric permittivity, and viscosity. In this paper, a flow rate is assumed to be sufficient. The electric potential is decreased by selecting the appropriate fluid. Fluid of high permittivity and low viscosity will enhance the potential factor there by, decreasing the potential.

scholarly journals Percolation effects in the capacitive properties of metal-oxide varistors in the range of high voltage

2014 ◽  
Vol 04 (02) ◽  
pp. 1450013 ◽  
Author(s):  
A. S. Tonkoshkur ◽  
I. V. Gomilko ◽  
A. Yu Lyashkov
Keyword(s):  
Electric Field ◽  
High Voltage ◽  
Percolation Theory ◽  
Low Voltage ◽  
Chemical Compositions ◽  
Infinite Cluster ◽  
Potential Barriers ◽  
Highly Nonlinear ◽  
Capacitive Properties ◽  
Manufacturing Techniques

C–V characteristics of ZnO -based ceramic structures used in manufacturing high-voltage and low-voltage varistors of different chemical compositions and manufacturing techniques have been investigated. A correlation between the intensity of electric field corresponding to transition of the C–V characteristics to the negative capacitances and average sizes of grains of a varistor structure has been established. Obtained data have been interpreted with the use of notions of the percolation theory of electric conductivity. The Shklovskii–De Gennes model has been used. It has been shown that on the highly nonlinear segment of C–V characteristics of a varistor structure, the size of an infinite cluster are limited to several intercrystallite potential barriers. This result is observed in all kinds of investigated varistor ceramics.

scholarly journals Development of Broadband Resistive–Capacitive Parallel–Connection Voltage Divider for Transient Voltage Monitoring

Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 451
Author(s):  
Shijun Xie ◽  
Zhou Mu ◽  
Weidong Ding ◽  
Zhenbo Wan ◽  
Shaochun Su ◽  
...  
Keyword(s):  
Power Systems ◽  
High Voltage ◽  
Low Voltage ◽  
Influence Factors ◽  
Voltage Divider ◽  
Step Response ◽  
Internal Electric Field ◽  
Scale Factors ◽  
Different Temperatures ◽  
Transient Voltages

The on-site measurement of transient voltages is of great significance in analyzing the fault cause of power systems and optimizing the insulation coordination of power equipment. Conventional voltage transformers normally have a narrow bandwidth and are unable to accurately measure various transient voltages in power systems. In this paper, a wideband parallel resistive–capacitive voltage divider is developed, which can be used for online monitoring of transient voltages in a 220 kV power grid. The structures of the high-voltage and low-voltage arms were designed. The internal electric field distribution of the high-voltage arm was analyzed. The influence factors and improvement techniques of the upper frequency limit were studied. The parameters of the elements of the divider were determined. The voltage withstand performances and scale factors under lightning impulses and AC and DC voltages, the temperature stabilities of scale factors and the step response and bandwidth of the developed voltage divider were tested. The results show that the deviations of the scale factors under various voltage waveforms and different temperatures ranging from −20 to 40 °C are within 3%. The withstand voltage meets the relevant requirements specified in IEC60071-1-2011. The step response 10~90% rise time is approximately 29 ns, and the 3 dB bandwidth covers the range of DC to 10 MHz.

Electric Field Orientation for Gene Delivery Using High-Voltage and Low-Voltage Pulses

2012 ◽  
Vol 245 (10) ◽  
pp. 661-666 ◽  
Author(s):  
J. Orio ◽  
M. Coustets ◽  
C. Mauroy ◽  
J. Teissie
Keyword(s):  
Gene Delivery ◽  
Electric Field ◽  
High Voltage ◽  
Low Voltage ◽  
Field Orientation ◽  
Voltage Pulses

Low-Voltage Variable Gain Current Amplifier for High-Voltage Signal Processing

2009 ◽  
Vol 129 (8) ◽  
pp. 1511-1517
Author(s):  
Nicodimus Retdian ◽  
Jieting Zhang ◽  
Takahide Sato ◽  
Shigetaka Takagi
Keyword(s):  
Signal Processing ◽  
High Voltage ◽  
Low Voltage ◽  
Current Amplifier ◽  
Variable Gain ◽  
Voltage Signal

PEMANFAATAN RADIASI ENERGI TEGANGAN 150 KV UNTUK LAMPU LED PENERANGAN JALAN

Jurnal Teknik ◽  
2018 ◽  
Vol 7 (1) ◽  
Author(s):  
Mauludi Manfaluthy
Keyword(s):  
Magnetic Field ◽  
Electric Field ◽  
High Voltage ◽  
Low Frequency ◽  
Energy Utilization ◽  
World Health ◽  
Electromagnetic Signals ◽  
Health Organization ◽  
The Magnetic Field ◽  
Low Frequency Waves

WHO (World Health Organization) concludes that not much effect is caused by electric field up to 20 kV / m in humans. WHO standard also mentions that humans will not be affected by the magnetic field under  100 micro tesla and that the electric field will affect the human body with a maximum standard of 5,000 volts per meter. In this study did not discuss about the effect of high voltage radiation SUTT (High Voltage Air Channel) with human health. The research will focus on energy utilization of SUTT radiation. The combination of electric field and magnetic field on SUTT (70-150KV) can generate electromagnetic (EM) and radiation waves, which are expected to be converted to turn on street lights around the location of high voltage areas or into other forms. The design of this prototype works like an antenna in general that captures electromagnetic signals and converts them into AC waves. With a capacitor that can store the potential energy of AC and Schottky diode waves created specifically for low frequency waves, make the current into one direction (DC). From the research results obtained the current generated from the radiation is very small even though the voltage is big enough.Keywords : Radiance Energy, Joule Thief, and  LED Module.

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