8.0 ELECTRIC POWER
... One line connects to the plant main transformer and is used for power export to the transmission system. Five lines connect to the auxiliary transformers. (Two emergency auxiliary transformers (EATs) and three normal auxiliary transformers (NATs).) In addition, four normally energized, physicall ...
... One line connects to the plant main transformer and is used for power export to the transmission system. Five lines connect to the auxiliary transformers. (Two emergency auxiliary transformers (EATs) and three normal auxiliary transformers (NATs).) In addition, four normally energized, physicall ...
Why is a transformer needed?
... Alternating current flows through a coil of wire (primary winding) and generates a magnetic field. The iron core of the transformer contains most of the magnetism and conducts this magnetism to where it passes through a second coil of wire (secondary winding). Since alternating current travels in th ...
... Alternating current flows through a coil of wire (primary winding) and generates a magnetic field. The iron core of the transformer contains most of the magnetism and conducts this magnetism to where it passes through a second coil of wire (secondary winding). Since alternating current travels in th ...
MAX 860 MAX 1500 MAX 2500
... only takes up 2 units of rack space. Secure this unit with 4 rack-mount screws and cup washers. In general, power amplifiers usually are heavier than any other audio equipment, so when installing this unit onto a rack, begin placing it from the bottom of the rack. Leave 1-rack space between power am ...
... only takes up 2 units of rack space. Secure this unit with 4 rack-mount screws and cup washers. In general, power amplifiers usually are heavier than any other audio equipment, so when installing this unit onto a rack, begin placing it from the bottom of the rack. Leave 1-rack space between power am ...
WARNING! - AR - RF Microwave Instrumentation
... The TWTA is not provided with an output isolator. While the TWTA is protected from excessive reflected power by foldback and VSWR circuits, it is poor practice to power the unit up without a load or an antenna. Even with no drive, "looping" oscillation can result in RF output if the TWTA is operated ...
... The TWTA is not provided with an output isolator. While the TWTA is protected from excessive reflected power by foldback and VSWR circuits, it is poor practice to power the unit up without a load or an antenna. Even with no drive, "looping" oscillation can result in RF output if the TWTA is operated ...
Mitigation of Inrush Currents in Network Transformers by Reducing
... closes, all transformers connected to that feeder are at no load and draw inrush currents. This is of great concern to power utilities because power restoration may fail. Not only can large inrush currents cause improper operation of protective relays, but they stress the transformer windings unduly ...
... closes, all transformers connected to that feeder are at no load and draw inrush currents. This is of great concern to power utilities because power restoration may fail. Not only can large inrush currents cause improper operation of protective relays, but they stress the transformer windings unduly ...
Autonomous USB PD controller with integrated discharge path
... connection to a Sink is established and VBUS is in the valid operating range. The open drain output allows to drive directly a PMOS transistor. The logic value of the pin is also advertised in a dedicated I2C register bit. ...
... connection to a Sink is established and VBUS is in the valid operating range. The open drain output allows to drive directly a PMOS transistor. The logic value of the pin is also advertised in a dedicated I2C register bit. ...
Photo by NASA – Johnson SFC This photograph of the "earthrise
... Unusual for metals, which are normally good conductors of electrical current, the silicon semiconductor is a very poor electrical conductor, almost having insulating properties. But it has the astonishing ability, if "doped" with small traces of impurities, to switch very small nano-currents --as in ...
... Unusual for metals, which are normally good conductors of electrical current, the silicon semiconductor is a very poor electrical conductor, almost having insulating properties. But it has the astonishing ability, if "doped" with small traces of impurities, to switch very small nano-currents --as in ...
THE FUNDAMENTALS OF AC ELECTRIC INDUCTION MOTOR
... Some engineers claim that an energy-efficient motor manifests most of its efficiency improvement as a lower slip speed; that is, as an increase—typically about 1 percent—in output speed. Because the 1 percent speed gain equates to a 3 percent horsepower requirement, they reason, the replacement ener ...
... Some engineers claim that an energy-efficient motor manifests most of its efficiency improvement as a lower slip speed; that is, as an increase—typically about 1 percent—in output speed. Because the 1 percent speed gain equates to a 3 percent horsepower requirement, they reason, the replacement ener ...
Reusing and Rerating Older Rectifiers with New DC/DC
... expensive transformer but a lower diode or thyristor count, this configuration was more often used on older units when the recti fier devices represented a higher proportion of total system cost. Transformers originally built for use with mercury arc recti fiers were nearly always single way, even ...
... expensive transformer but a lower diode or thyristor count, this configuration was more often used on older units when the recti fier devices represented a higher proportion of total system cost. Transformers originally built for use with mercury arc recti fiers were nearly always single way, even ...
Computer-8d -96 Computer-8d
... power system status, and to take complex decisions that most times require a high quantity of calculations. This series compiles the CIRCUTOR’s large experience with power factor regulators, so improving their previous features by the application of latest technology. ...
... power system status, and to take complex decisions that most times require a high quantity of calculations. This series compiles the CIRCUTOR’s large experience with power factor regulators, so improving their previous features by the application of latest technology. ...
BR26452459
... problems in the voltage while the unified powerquality conditioner (UPQC) is proposed for solving current and voltage PQ problems. There are many techniques reported for the elimination of harmonics from the source current as well as the compensation of the neutral current and load unbalancing [4][5 ...
... problems in the voltage while the unified powerquality conditioner (UPQC) is proposed for solving current and voltage PQ problems. There are many techniques reported for the elimination of harmonics from the source current as well as the compensation of the neutral current and load unbalancing [4][5 ...
An Integrated Full-Wave CMOS Rectifier With Built
... to be large to provide small “on” resistance, consume chip area and in case of the series switch [11] result in additional dropout voltage, degrading the overall system power efficiency. We have developed an integrated full-wave rectifier in standard CMOS technology with built-in back telemetry, whi ...
... to be large to provide small “on” resistance, consume chip area and in case of the series switch [11] result in additional dropout voltage, degrading the overall system power efficiency. We have developed an integrated full-wave rectifier in standard CMOS technology with built-in back telemetry, whi ...
AN9506: A 50W, 500kHz, Full-Bridge, Phase-Shift, ZVS
... Many articles and papers have been published recently promoting the performance and benefits of the Phase-Shift, Full-Bridge Topology and rightly so. This topology productively utilizes the same elements that have been plaguing power supply designers for decades, those infamous parasitic components. ...
... Many articles and papers have been published recently promoting the performance and benefits of the Phase-Shift, Full-Bridge Topology and rightly so. This topology productively utilizes the same elements that have been plaguing power supply designers for decades, those infamous parasitic components. ...
Network effects of line start permanent magnet synchronous motors
... its rotor, along with a squirrel cage starting winding. It can be contacted directly to the supply for starting and running. Its main advantage over an induction machine is that its efficiency can be considerably higher: losses during normal running can be halved, due to the reduction of magnetising ...
... its rotor, along with a squirrel cage starting winding. It can be contacted directly to the supply for starting and running. Its main advantage over an induction machine is that its efficiency can be considerably higher: losses during normal running can be halved, due to the reduction of magnetising ...
HV2213591366
... the sensed dc bus voltage of DSTATCOM is given to a proportional-integral (PI) controller whose output is considered the loss component of the current and is added to the dc component of id and iq. The error between the reference dc capacitor voltage and the sensed dc bus voltage of DSTATCOM is give ...
... the sensed dc bus voltage of DSTATCOM is given to a proportional-integral (PI) controller whose output is considered the loss component of the current and is added to the dc component of id and iq. The error between the reference dc capacitor voltage and the sensed dc bus voltage of DSTATCOM is give ...
Sign Industry Meeting 29 Feb – 1 Mar 2012
... This category covers retrofit sign conversions consisting of subassemblies or kits intended for field installation in Listed signs. There are several types of sign conversions as specified below. Scrolling units (motor-operated message assemblies), devices to change the type of illumination ( such a ...
... This category covers retrofit sign conversions consisting of subassemblies or kits intended for field installation in Listed signs. There are several types of sign conversions as specified below. Scrolling units (motor-operated message assemblies), devices to change the type of illumination ( such a ...
Three-Phase High-Power and Zero-Current-Switching OBC
... of the conversion efficiency, soft switching technology is widely used in the DC/DC converter. The most commonly-used topologies are the phase shifted zero-voltage-switching (ZVS) topology [6–10] and the resonant tank with two inductors and a capacitor (LLC) resonant topology [11–13]. The shifted ZV ...
... of the conversion efficiency, soft switching technology is widely used in the DC/DC converter. The most commonly-used topologies are the phase shifted zero-voltage-switching (ZVS) topology [6–10] and the resonant tank with two inductors and a capacitor (LLC) resonant topology [11–13]. The shifted ZV ...
PWM Converter Power Density Barriers
... the requirements for higher efficiency, lower volume, lower weight and lower production costs (cf. Fig. 1). A high efficiency is usually demanded at the nominal operating point, and in particular for redundant systems operating with partial loads (1) , to ensure a good utilization of the energy reso ...
... the requirements for higher efficiency, lower volume, lower weight and lower production costs (cf. Fig. 1). A high efficiency is usually demanded at the nominal operating point, and in particular for redundant systems operating with partial loads (1) , to ensure a good utilization of the energy reso ...
Run-Time Technique for Simultaneous Aging and Power Optimization in GPGPUs Xiaoming Chen
... range of applications have enjoyed the attractive computing capability offered by GPUs [1–4]. In recent years, there is also a rapid adoption of GPUs in mobile devices like smart phones. The system-on-chip solutions that integrate GPUs with other processing units are available in the mobile market, s ...
... range of applications have enjoyed the attractive computing capability offered by GPUs [1–4]. In recent years, there is also a rapid adoption of GPUs in mobile devices like smart phones. The system-on-chip solutions that integrate GPUs with other processing units are available in the mobile market, s ...
Optimizing Magnetic Sensor Power Operations for Low Data Rates
... Freescale reserves the right to make changes without further notice to any products herein. Freescale makes no warranty, representation, or guarantee regarding the suitability of its products for any particular purpose, nor does Freescale assume any liability arising out of the application or use of ...
... Freescale reserves the right to make changes without further notice to any products herein. Freescale makes no warranty, representation, or guarantee regarding the suitability of its products for any particular purpose, nor does Freescale assume any liability arising out of the application or use of ...
AAT4672 数据资料DataSheet下载
... and MAIN pin voltage is greater than the AUX pin voltage plus 200mV. The AUX pin connects to the OUT pin only when the MAIN pin voltage drops 0.2V below the AUX pin voltage and the AUX pin voltage is greater than the UVLO threshold. If both input supplies (MAIN/AUX) are below the UVLO threshold, the ...
... and MAIN pin voltage is greater than the AUX pin voltage plus 200mV. The AUX pin connects to the OUT pin only when the MAIN pin voltage drops 0.2V below the AUX pin voltage and the AUX pin voltage is greater than the UVLO threshold. If both input supplies (MAIN/AUX) are below the UVLO threshold, the ...
Electrification
Electrification is the process of powering by electricity and is usually associated with changing over from another power source. The broad meaning of the term, such as in the history of technology and economic history, usually applies to a region or national economy. Broadly speaking, electrification was the build out of the electrical generating and distribution systems which occurred in Britain, the United States, and other countries from the mid-1880s until around 1950 and is in progress in rural areas in some developing countries. This included the change over from line shaft and belt drive using steam engines and water power to electric motors.The electrification of particular sectors of the economy is called by terms such as factory electrification, household electrification, rural electrification or railway electrification. It may also apply to changing industrial processes such as smelting, melting, separating or refining from coal or coke heating or chemical processes to some type of electric process such as electric arc furnace, electric induction or resistance heating or electrolysis or electrolytic separating.Electrification was called ""the greatest engineering achievement of the 20th Century"" by the National Academy of Engineering.