Grounding Resistance
... • Simulator provides defaults based on number of buses and highest nominal kV, but research has shown this to be a poor substitute for actual measurements – Simulator defaults range from 0.1 to 2.0 – Substations with more buses and higher nominal kV are assumed to have lower grounding resistanc ...
... • Simulator provides defaults based on number of buses and highest nominal kV, but research has shown this to be a poor substitute for actual measurements – Simulator defaults range from 0.1 to 2.0 – Substations with more buses and higher nominal kV are assumed to have lower grounding resistanc ...
FIRST ORDER CIRCUITS Introduction
... and one inductor and one resistor (RL) will be examined. Voltage across the capacitor will be observed as it charged or discharged through the resistor. The goals of this experiment are to show that the charge/discharge follows an exponential fuction and to understand the effect of the time constant ...
... and one inductor and one resistor (RL) will be examined. Voltage across the capacitor will be observed as it charged or discharged through the resistor. The goals of this experiment are to show that the charge/discharge follows an exponential fuction and to understand the effect of the time constant ...
technical memo on power-frequency electric and magnetic fields
... accordance with FCC Rules and Regulations (47 CFR Part 15). Electric power companies have been able to work well under the present FCC rule because harmful interference can generally be eliminated. It has been estimated that more than 95 percent of power line sources that cause interference are due ...
... accordance with FCC Rules and Regulations (47 CFR Part 15). Electric power companies have been able to work well under the present FCC rule because harmful interference can generally be eliminated. It has been estimated that more than 95 percent of power line sources that cause interference are due ...
Physical Science
... containing at its centre a fine pivot which supports four light weight metal arms. One side of each vane is blackened, the reverse side is bright. Mounted on round plastic moulded base. ...
... containing at its centre a fine pivot which supports four light weight metal arms. One side of each vane is blackened, the reverse side is bright. Mounted on round plastic moulded base. ...
Diodes and Transistors •
... Doping is a process where impurities are added to the semiconductor to lower its resistivity Silicon has 4 electrons in its valence level We add atoms which have a different number of valence shell electrons 3 or 5 to a piece of silicon. Phosphorous, Arsenic, Antimony have 5 valence electrons Boron, ...
... Doping is a process where impurities are added to the semiconductor to lower its resistivity Silicon has 4 electrons in its valence level We add atoms which have a different number of valence shell electrons 3 or 5 to a piece of silicon. Phosphorous, Arsenic, Antimony have 5 valence electrons Boron, ...
phys1444-fall11-092211-post
... – C is a proportionality constant, called capacitance of the device. PHYS 1444-003, Fall 2011 Dr. Jaehoon ...
... – C is a proportionality constant, called capacitance of the device. PHYS 1444-003, Fall 2011 Dr. Jaehoon ...
other uses, in any current or future media, including reprinting/republishing... advertising or promotional purposes, creating new collective works, for resale... © 2013 IEEE
... relative permittivity (i.e. dielectric constant), continuous operational field strength and energy density limits of Al2O3, polypropylene and ceramics, which are the materials used in Al-Caps, MPPF-Caps and MLC-Caps, respectively [5]. It can be noted that Al2O3 has the highest energy density due to ...
... relative permittivity (i.e. dielectric constant), continuous operational field strength and energy density limits of Al2O3, polypropylene and ceramics, which are the materials used in Al-Caps, MPPF-Caps and MLC-Caps, respectively [5]. It can be noted that Al2O3 has the highest energy density due to ...
幻灯片 1
... larger blocking voltages, but have longer switching times, especially at turn-off while. MOSFETs can be turned on and off much faster, but their on-state conduction losses are larger, especially in devices rated for higher blocking voltages. IGBTs have lower on-state voltage drop with high blocking ...
... larger blocking voltages, but have longer switching times, especially at turn-off while. MOSFETs can be turned on and off much faster, but their on-state conduction losses are larger, especially in devices rated for higher blocking voltages. IGBTs have lower on-state voltage drop with high blocking ...
4.1 Rate Gyro Design - Colorado Space Grant Consortium
... availability, and analytical analysis. The magnetic torque rods will be built using a magnesium zinc core with a magnetic permeability of 800. The density of the material is much less than that of iron. The cores are wrapped in 24 guage wire. The torquers will simply have an input of two power lines ...
... availability, and analytical analysis. The magnetic torque rods will be built using a magnesium zinc core with a magnetic permeability of 800. The density of the material is much less than that of iron. The cores are wrapped in 24 guage wire. The torquers will simply have an input of two power lines ...
Title A linear doubly-salient HTS machine for wave energy
... integrity problem. Recently, a new class of PM brushless machines, namely the doubly salient PM (DSPM) machine, has been developed [3], in which the corresponding PMs are located in the stator, while the rotor is a simple iron core with salient poles. Thus, it offers the merits of high power density ...
... integrity problem. Recently, a new class of PM brushless machines, namely the doubly salient PM (DSPM) machine, has been developed [3], in which the corresponding PMs are located in the stator, while the rotor is a simple iron core with salient poles. Thus, it offers the merits of high power density ...
Coilgun
A coilgun (or Gauss rifle, in reference to Carl Friedrich Gauss, who formulated mathematical descriptions of the magnetic effect used by magnetic accelerators) is a type of projectile accelerator consisting of one or more coils used as electromagnets in the configuration of a linear motor that accelerate a ferromagnetic or conducting projectile to high velocity. In almost all coilgun configurations, the coils and the gun barrel are arranged on a common axis.Coilguns generally consist of one or more coils arranged along a barrel, so the path of the accelerating projectile lies along the central axis of the coils. The coils are switched on and off in a precisely timed sequence, causing the projectile to be accelerated quickly along the barrel via magnetic forces. Coilguns are distinct from railguns, as the direction of acceleration in a railgun is at right angles to the central axis of the current loop formed by the conducting rails. In addition, railguns usually require the use of sliding contacts to pass a large current through the projectile or sabot but coilguns do not necessarily require sliding contacts. Whilst some simple coilgun concepts can use ferromagnetic projectiles or even permanent magnet projectiles, most designs for high velocities actually incorporate a coupled coil as part of the projectile.