IOSR Journal of Electrical and Electronics Engineering (IOSRJEEE)
... Semiconductor power devices, especially diodes play important role in switching response. Low power dissipation on the switching devices will give rise to highly efficient power electronic system. For example, if a semiconductor device operates in a linear mode such as in power amplifiers of in line ...
... Semiconductor power devices, especially diodes play important role in switching response. Low power dissipation on the switching devices will give rise to highly efficient power electronic system. For example, if a semiconductor device operates in a linear mode such as in power amplifiers of in line ...
By Mickael J. Cressman
... materials. Materials are rated on the triboelectric series, which is a listing of materials in the order of the sign and magnitude of charge transferred when they are touched. A Van de Graaf accelerator using the triboelectric effect would then use two materials that are far apart on the series, lik ...
... materials. Materials are rated on the triboelectric series, which is a listing of materials in the order of the sign and magnitude of charge transferred when they are touched. A Van de Graaf accelerator using the triboelectric effect would then use two materials that are far apart on the series, lik ...
transparencies
... • performance of type 2 superconductors is described by the critical surface in B q J space, - properties in B and q space are reversible properties determined by the chemistry - properties in J space are irreversible and lossy, determined by flux pinning inhomogeneities • engineering current densit ...
... • performance of type 2 superconductors is described by the critical surface in B q J space, - properties in B and q space are reversible properties determined by the chemistry - properties in J space are irreversible and lossy, determined by flux pinning inhomogeneities • engineering current densit ...
DC Machine lab
... The dynamometer acts as a generator when it is being used to load a motor. The dynamometer armature is loaded by the resistor bank. All switches should be in the center “off” position for no-load tests. To load the dynamometer, move all the switches to “up” position. Speed measurements are made with ...
... The dynamometer acts as a generator when it is being used to load a motor. The dynamometer armature is loaded by the resistor bank. All switches should be in the center “off” position for no-load tests. To load the dynamometer, move all the switches to “up” position. Speed measurements are made with ...
Nineteenth-Century Developments in Coiled Instruments and
... a trough (multi-cell) battery and an entirely separate wire coil. The disturbance was evident by the deflection of a magnetic needle suspended either near that loop or within a galvanometer coil that Faraday added into the loop’s circuit. In this first demonstration of his seminal finding of electro ...
... a trough (multi-cell) battery and an entirely separate wire coil. The disturbance was evident by the deflection of a magnetic needle suspended either near that loop or within a galvanometer coil that Faraday added into the loop’s circuit. In this first demonstration of his seminal finding of electro ...
Switch gear and Protection 10EE62 Generator Faults The various
... short circuit between the turns of One Coil may occur which Is called an inter-turn fault. This fault occurs due to current surges with high value of (L di/do voltage across the turns. But if the coils used are single turn then this fault can not occur. Hence for the large machines of the order of 5 ...
... short circuit between the turns of One Coil may occur which Is called an inter-turn fault. This fault occurs due to current surges with high value of (L di/do voltage across the turns. But if the coils used are single turn then this fault can not occur. Hence for the large machines of the order of 5 ...
Aalborg Universitet
... have been investigated earlier in this paper. Avoiding the usage of direct/indirect current sensors is one of the main advantages of using ANN to obtain the estimated value of C. Instead of sensing the capacitor current iC, only the input terminal and output terminal information of the power convert ...
... have been investigated earlier in this paper. Avoiding the usage of direct/indirect current sensors is one of the main advantages of using ANN to obtain the estimated value of C. Instead of sensing the capacitor current iC, only the input terminal and output terminal information of the power convert ...
DC Motors - ReshimNa5.ru
... At the most basic level, electric motors exist to convert electrical energy into mechanical energy. This is done by way of two interacting magnetic fields -- one stationary, and another attached to a part that can move. A number of types of electric motors exist, but most BEAMbots use DC motors1 in ...
... At the most basic level, electric motors exist to convert electrical energy into mechanical energy. This is done by way of two interacting magnetic fields -- one stationary, and another attached to a part that can move. A number of types of electric motors exist, but most BEAMbots use DC motors1 in ...
Nuclear Magnetic Resonance Spectrometer
... accomplishments we have broken it up into five block components. The first component is the magnetic field itself and it is the building block upon which all of the other blocks rely on to function properly. [8] The magnet is essential to the NMR process and it is entirely its own standalone part of ...
... accomplishments we have broken it up into five block components. The first component is the magnetic field itself and it is the building block upon which all of the other blocks rely on to function properly. [8] The magnet is essential to the NMR process and it is entirely its own standalone part of ...
Finite Element Analysis of an Exterior Rotor Permanent Magnet
... The impressive improvement in power electronic switching devices, integrated circuits, developments and refinements in permanent-magnetic materials, and manufacturing technology have led to the development of brushless permanent- magnet motors that offer significant improvements in power density, ef ...
... The impressive improvement in power electronic switching devices, integrated circuits, developments and refinements in permanent-magnetic materials, and manufacturing technology have led to the development of brushless permanent- magnet motors that offer significant improvements in power density, ef ...
Magnetic Components Test Solution
... Power loss and temperature rise of magnetic components Today's products require low-power-loss and high-performance - reflected directly by internal parts - and there is no exception for magnetic components. The magnetic components are composed of a core and copper wire coils. Besides inductance, t ...
... Power loss and temperature rise of magnetic components Today's products require low-power-loss and high-performance - reflected directly by internal parts - and there is no exception for magnetic components. The magnetic components are composed of a core and copper wire coils. Besides inductance, t ...
Power Diodes - Dr. Imtiaz Hussain
... – These diodes are designed to be used in high frequency circuits in combination with controllable switches where a small reverse recovery time is needed. – At power levels of several hundred volts and several hundred amperes such diodes have trr rating of less than few microseconds. ...
... – These diodes are designed to be used in high frequency circuits in combination with controllable switches where a small reverse recovery time is needed. – At power levels of several hundred volts and several hundred amperes such diodes have trr rating of less than few microseconds. ...
Experiment : 1
... The light-emitting diode (LED) is a diode that will give off visible light when threshold voltage is given. In LED material gallium arsenide phosphide (GaAsP) or gallium phosphide(GaP) used to create light, which is called electroluminescence. For every LED there is a distinct forward voltage and cu ...
... The light-emitting diode (LED) is a diode that will give off visible light when threshold voltage is given. In LED material gallium arsenide phosphide (GaAsP) or gallium phosphide(GaP) used to create light, which is called electroluminescence. For every LED there is a distinct forward voltage and cu ...
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.