Part 8 (PPT File) - DESE, IISc Bangalore
... The switches S11 to S46, in the above figure, are part of the two level inverters which are fed from the voltage source magnitude of Vdc/4 So the maximum voltage blocking capacity of the switches (labelled as Sxy, where x= 1 to 4 and y= 1 to 6) is Vdc/4 With the proposed topology, it is possib ...
... The switches S11 to S46, in the above figure, are part of the two level inverters which are fed from the voltage source magnitude of Vdc/4 So the maximum voltage blocking capacity of the switches (labelled as Sxy, where x= 1 to 4 and y= 1 to 6) is Vdc/4 With the proposed topology, it is possib ...
ADP2114 Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator
... are synchronized. The frequency select resistor, mentioned in the description of Pin 3, must be selected close to the expected switching frequency for stable operation. Operation Configuration Input. Connect this pin through a resistor to GND to set the system mode of operation according to Table 7. ...
... are synchronized. The frequency select resistor, mentioned in the description of Pin 3, must be selected close to the expected switching frequency for stable operation. Operation Configuration Input. Connect this pin through a resistor to GND to set the system mode of operation according to Table 7. ...
Evaluation of Transient Recovery Voltage Issues Associated with the
... between the power input and the power loss due to gas cooling in a gas circuit breaker. If the gas blast is not sufficient, the arc resistance stops increasing after current zero, it decreases to a low value, as a consequence the interval between contacts becomes conductive again and we have…… ...
... between the power input and the power loss due to gas cooling in a gas circuit breaker. If the gas blast is not sufficient, the arc resistance stops increasing after current zero, it decreases to a low value, as a consequence the interval between contacts becomes conductive again and we have…… ...
µPMICs for Multimedia Application Processors in a 3.0mm x 2.5mm WLP MAX8893A/MAX8893B/MAX8893C
... programmable output voltages, individual power-on/ off control inputs, a load switch, and a USB high-speed switch. These devices maintain high efficiency with a low no-load supply current, and the small 3.0mm x 2.5mm WLP package makes them ideal for portable devices. ...
... programmable output voltages, individual power-on/ off control inputs, a load switch, and a USB high-speed switch. These devices maintain high efficiency with a low no-load supply current, and the small 3.0mm x 2.5mm WLP package makes them ideal for portable devices. ...
Power Quality Issues and its Mitigation Techniques - ethesis
... There are many methods to mitigate the voltage sag and among them the best way is to connect a FACT device at the point of interest. The well-known devices like DSTATCOM, DVR, and UPQC are used for this purpose. The world’s earliest DVR ‘s installation was done at Duke Power Company’s 12.47kV subst ...
... There are many methods to mitigate the voltage sag and among them the best way is to connect a FACT device at the point of interest. The well-known devices like DSTATCOM, DVR, and UPQC are used for this purpose. The world’s earliest DVR ‘s installation was done at Duke Power Company’s 12.47kV subst ...
LME49710 数据资料 dataSheet 下载
... the error signal (distortion) is amplified by a factor of 101. Although the amplifier’s closed-loop gain is unaltered, the feedback available to correct distortion errors is reduced by 101, which means that measurement resolution increases by 101. To ensure minimum effects on distortion measurements ...
... the error signal (distortion) is amplified by a factor of 101. Although the amplifier’s closed-loop gain is unaltered, the feedback available to correct distortion errors is reduced by 101, which means that measurement resolution increases by 101. To ensure minimum effects on distortion measurements ...
Electrical Installation Calculations: Advanced
... is created around the conductor. If the conductor is wound into a coil the magnetic field is increased. Where there are significant magnetic fields in a circuit there is opposition to the flow of current, this opposition is called inductive reactance. The opposition caused by inductive reactance is in a ...
... is created around the conductor. If the conductor is wound into a coil the magnetic field is increased. Where there are significant magnetic fields in a circuit there is opposition to the flow of current, this opposition is called inductive reactance. The opposition caused by inductive reactance is in a ...
AN-6076 Design and Application Guide of Bootstrap Circuit for High
... requirement to refresh the charge in the bootstrap capacitor and serious problems occur when the negative voltage is presented at the source of the switching device. The most popular bootstrap circuit solutions are analyzed; including the effects of parasitic elements, the bootstrap resistor, and ca ...
... requirement to refresh the charge in the bootstrap capacitor and serious problems occur when the negative voltage is presented at the source of the switching device. The most popular bootstrap circuit solutions are analyzed; including the effects of parasitic elements, the bootstrap resistor, and ca ...
Wang, J., Q. Yang, W. Sima, T. Yuan, and M. Zahn, A Smart Online Over-Voltage Monitoring and Identification System, Energies, 4, pp. 599-615, 2011
... 2.1. Over-Voltage Sensor The development of an over-voltage sensor is a key part of any online monitoring system. At present, the over-voltage monitoring devices used in the distribution network, are mostly based on the potential transformer system and resistor or capacitor voltage-dividing systems. ...
... 2.1. Over-Voltage Sensor The development of an over-voltage sensor is a key part of any online monitoring system. At present, the over-voltage monitoring devices used in the distribution network, are mostly based on the potential transformer system and resistor or capacitor voltage-dividing systems. ...
a single-phase dual-output ac-dc converter with high
... Figure 4.34 Line current waveform at light load................................................ 106 ...
... Figure 4.34 Line current waveform at light load................................................ 106 ...
Manual: Rosemount 1154 Alphaline® Nuclear Pressure Transmitter
... footnotes are updated to add note (5) which will read as follows: (5) IMPORTANT NOTICE: To maintain a transmitter’s qualified configuration, when purchasing or installing a new Sensor Module, Rosemount Qualification report D2011019 must be carefully reviewed to verify that the Sensor Module to be in ...
... footnotes are updated to add note (5) which will read as follows: (5) IMPORTANT NOTICE: To maintain a transmitter’s qualified configuration, when purchasing or installing a new Sensor Module, Rosemount Qualification report D2011019 must be carefully reviewed to verify that the Sensor Module to be in ...
Work Coil Design used in Induction Hardening Machine
... Single-turn coils are preferred when the heated area is narrow or restricted. Single-turn coils are more practical where the height does not exceed the diameter. Multi-turn coils are to be preferred for heating long areas. When the length of a coil exceeds eight times its diameter, uniform heating m ...
... Single-turn coils are preferred when the heated area is narrow or restricted. Single-turn coils are more practical where the height does not exceed the diameter. Multi-turn coils are to be preferred for heating long areas. When the length of a coil exceeds eight times its diameter, uniform heating m ...
Arc root commutation from moving contacts in low voltage
... The opening of the contacts can be controlled and has been set in these experiments to 0.5 0.1 ms after the start of the short circuit current pulse. Techniques have been developed that allow the trajectory of the two arc roots to be plotted separately from the AIS data, based on the method identifi ...
... The opening of the contacts can be controlled and has been set in these experiments to 0.5 0.1 ms after the start of the short circuit current pulse. Techniques have been developed that allow the trajectory of the two arc roots to be plotted separately from the AIS data, based on the method identifi ...
Performance comparison of Seven Level Inverter and Nine Level
... topology is introduced. The power electronic switches of level generation part are switched at high frequency [19]. A modular multilevel inverter is proposed. This inverter is similar to cascaded H-bridge type applied to the photovoltaic grid connected generator [20]. A multilevel dc-link inverter i ...
... topology is introduced. The power electronic switches of level generation part are switched at high frequency [19]. A modular multilevel inverter is proposed. This inverter is similar to cascaded H-bridge type applied to the photovoltaic grid connected generator [20]. A multilevel dc-link inverter i ...
Aluminum Electrolytic Capacitors Conductive Polymer
... A liquid electrolyte, while tantalum electrolytic capacitors use a solid electrolyte. These structural differences in aluminum electrolytic capacitors and tantalum electrolytic capacitors have a large influence on their performance and reliability. The biggest difference of them is in their electro ...
... A liquid electrolyte, while tantalum electrolytic capacitors use a solid electrolyte. These structural differences in aluminum electrolytic capacitors and tantalum electrolytic capacitors have a large influence on their performance and reliability. The biggest difference of them is in their electro ...
KEY COMPONENTS FOR POWER FACTOR CORRECTION IN
... The installation of detuned (reactor-connected) capacitors is designed to force the resonant frequency of the network below the frequency of the lowest harmonic present, thereby ensuring no resonant circuit and, by implication, no amplification of harmonic currents. Such an installation also has a p ...
... The installation of detuned (reactor-connected) capacitors is designed to force the resonant frequency of the network below the frequency of the lowest harmonic present, thereby ensuring no resonant circuit and, by implication, no amplification of harmonic currents. Such an installation also has a p ...
Radio and Sensor Interfaces for Energy
... of the UHF signal. Thanks to the fast setup time (< 50 ns at -15 dBm input power), the proposed transmitter is fully power scalable with 35 pJ/pulse energy consumption. When -15 dBm UHF carrier signal power is injected, 21% locking range can be achieved to prevent PVT variations. To comply with the ...
... of the UHF signal. Thanks to the fast setup time (< 50 ns at -15 dBm input power), the proposed transmitter is fully power scalable with 35 pJ/pulse energy consumption. When -15 dBm UHF carrier signal power is injected, 21% locking range can be achieved to prevent PVT variations. To comply with the ...
Design and Implementation of Cascade H Bridge Multilevel Inverter
... simplicity in structure, usage of less number of components etc. Their main advantage is that they can generate output voltages with extremely low distortion and lower voltage stresses (dv/dt). They can operate with a lower switching frequency. Cascaded Multilevel Inverter[6] consist of series of H- ...
... simplicity in structure, usage of less number of components etc. Their main advantage is that they can generate output voltages with extremely low distortion and lower voltage stresses (dv/dt). They can operate with a lower switching frequency. Cascaded Multilevel Inverter[6] consist of series of H- ...
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.""