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... medium-voltage drives. Motor damage and failure have been noticed due to some conventional inverters, as high stress level rates produces a common mode voltage across the motor windings. The main problems are motor bearing and motor winding insulation breakdown. Multilevel power converter structure ...
... medium-voltage drives. Motor damage and failure have been noticed due to some conventional inverters, as high stress level rates produces a common mode voltage across the motor windings. The main problems are motor bearing and motor winding insulation breakdown. Multilevel power converter structure ...
Valve Position Transmitter - Cla-Val
... until its centerline is lined up with centerline of transmitter actuating arm pivot centerline (actuating stem and actuating arm should be at 90 degrees to each other). Mark top and bottom of spool location on stem at this ‘halfway’ position. Determine valve stroke by multiplying .281 times the valv ...
... until its centerline is lined up with centerline of transmitter actuating arm pivot centerline (actuating stem and actuating arm should be at 90 degrees to each other). Mark top and bottom of spool location on stem at this ‘halfway’ position. Determine valve stroke by multiplying .281 times the valv ...
MAX8729 Constant-Frequency, Half-Bridge CCFL Inverter Controller General Description
... inverter controller is designed to drive multiple CCFLs using the half-bridge inverter consisting of two external n-channel power MOSFETs. The half-bridge topology minimizes the component count, while providing near sinusoidal drive waveforms. The MAX8729 operates in resonant mode during striking an ...
... inverter controller is designed to drive multiple CCFLs using the half-bridge inverter consisting of two external n-channel power MOSFETs. The half-bridge topology minimizes the component count, while providing near sinusoidal drive waveforms. The MAX8729 operates in resonant mode during striking an ...
FDMF6704V - XS DrMOS FD M
... The high-side driver (GH) is designed to drive a floating N-channel MOSFET. The bias voltage for the high-side driver is developed by a bootstrap supply circuit, consisting of the internal BOOT diode and an external bootstrap capacitor (CBOOT). During start-up, VSWH is held at PGND, allowing CBOOT t ...
... The high-side driver (GH) is designed to drive a floating N-channel MOSFET. The bias voltage for the high-side driver is developed by a bootstrap supply circuit, consisting of the internal BOOT diode and an external bootstrap capacitor (CBOOT). During start-up, VSWH is held at PGND, allowing CBOOT t ...
Effect of metal oxide arrester on the chaotic
... has the potential to describe and analyze qualitative characteristics of solutions, i.e., fixed points, as the system parameters change. In addition, creating a bifurcation diagram with a continuous method can be more systematic, with reduced computational operations. [14] The ferroresonance has bee ...
... has the potential to describe and analyze qualitative characteristics of solutions, i.e., fixed points, as the system parameters change. In addition, creating a bifurcation diagram with a continuous method can be more systematic, with reduced computational operations. [14] The ferroresonance has bee ...
PDF
... Inverters can be broadly categorized into two types: 1. Voltage Source Inverters VSI 2. Current Source Inverters CSI GenerallyInverters can be single-phase or three-phase in nature, they are employed depending upon their low power and high power rating for variety of applications. Each Inverter type ...
... Inverters can be broadly categorized into two types: 1. Voltage Source Inverters VSI 2. Current Source Inverters CSI GenerallyInverters can be single-phase or three-phase in nature, they are employed depending upon their low power and high power rating for variety of applications. Each Inverter type ...
use of arno converter and motor-generator set to convert a
... in the actual current carried by the winding in the stator but the generating phase carries only the load current which cause a voltage drop in the generating phase. Like ARNO, motor-generator set can also be used to convert a single-phase AC supply to a three-phase AC. In the context of electric po ...
... in the actual current carried by the winding in the stator but the generating phase carries only the load current which cause a voltage drop in the generating phase. Like ARNO, motor-generator set can also be used to convert a single-phase AC supply to a three-phase AC. In the context of electric po ...
Introduction to Laboratory Instruments
... A four-wire resistance measurement uses two sets of leads connected between the multimeter and the unknown resistance. One set applies a known current to the resistor. The second set is used solely for voltage measurement with ideally zero current flow. A four-wire resistance measurement eliminates ...
... A four-wire resistance measurement uses two sets of leads connected between the multimeter and the unknown resistance. One set applies a known current to the resistor. The second set is used solely for voltage measurement with ideally zero current flow. A four-wire resistance measurement eliminates ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... Devices which convert between three-phase AC power and DC power are commonly called AC/DC power convertors and they can be found throughout industry in applications such as variable speed motor drives, battery chargers, arc welding equipment and uninterruptible power supplies. Often the term rectifi ...
... Devices which convert between three-phase AC power and DC power are commonly called AC/DC power convertors and they can be found throughout industry in applications such as variable speed motor drives, battery chargers, arc welding equipment and uninterruptible power supplies. Often the term rectifi ...
LMR16030 - Texas Instruments
... achieve high efficiency. The device is internally compensated, which reduces design time, and requires fewer external components. The switching frequency is programmable from 200 kHz to 2.5 MHz by an external resistor RT. The LMR16030 is also capable of synchronization to an external clock within th ...
... achieve high efficiency. The device is internally compensated, which reduces design time, and requires fewer external components. The switching frequency is programmable from 200 kHz to 2.5 MHz by an external resistor RT. The LMR16030 is also capable of synchronization to an external clock within th ...
DP35648654
... Various transformer inrush reduction techniques have been presented, like controlling power-on angle and the voltage magnitude [8], or actively controlling the transformer current [9]. These methods could easily alter the output voltage waveforms of the converter, and thus, is not suitable for volta ...
... Various transformer inrush reduction techniques have been presented, like controlling power-on angle and the voltage magnitude [8], or actively controlling the transformer current [9]. These methods could easily alter the output voltage waveforms of the converter, and thus, is not suitable for volta ...
Electricity Lab NV6000 Operating Manual Ver 1.1 141
... The NV6000 Electricity Lab is a versatile Training kit, for a laboratory. It is designed such that all the basic electrical circuits can be tested with the help of this trainer kit. The experiments given with training system develop mental starting from an introduction to the circuit, basic fundamen ...
... The NV6000 Electricity Lab is a versatile Training kit, for a laboratory. It is designed such that all the basic electrical circuits can be tested with the help of this trainer kit. The experiments given with training system develop mental starting from an introduction to the circuit, basic fundamen ...
AC motor & drive - syncronous
... when the torque on the shaft of a synchronous motor exceeds the pullout torque, the rotor can no longer remain locked to the stator and net magnetic fields. Instead, the motor will slows down and at last will vibrate ...
... when the torque on the shaft of a synchronous motor exceeds the pullout torque, the rotor can no longer remain locked to the stator and net magnetic fields. Instead, the motor will slows down and at last will vibrate ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""