- aes journals
... position can be actively calculated according to the operating speeds. Moreover, the switching function concept is adopted to model the PWM inverter. This in turn results in obtaining the detailed voltage and current waveforms [1]. BDCM has been widely used in industrial applications because of its ...
... position can be actively calculated according to the operating speeds. Moreover, the switching function concept is adopted to model the PWM inverter. This in turn results in obtaining the detailed voltage and current waveforms [1]. BDCM has been widely used in industrial applications because of its ...
AN124 - 775 Nanovolt Noise Measurement for A Low Noise Voltage
... resistor, are fully shielded against pick-up. FETs Q1 and Q2 differentially feed A2, forming a simple low noise op amp. Feedback, provided by the 100k - 10Ω pair, sets closed loop gain at 10,000. Although Q1 and Q2 have extraordinarily low noise characteristics, their offset and drift are uncontroll ...
... resistor, are fully shielded against pick-up. FETs Q1 and Q2 differentially feed A2, forming a simple low noise op amp. Feedback, provided by the 100k - 10Ω pair, sets closed loop gain at 10,000. Although Q1 and Q2 have extraordinarily low noise characteristics, their offset and drift are uncontroll ...
Surge protection for electrical power installations
... strategy. When providing protection, users are keen to apply surge protection devices, or SPDs, to process signal lines, transmitters, file severs and other important equipment as the source of surges is more obvious. However, a common source of surges is the AC power supply. It is important to note ...
... strategy. When providing protection, users are keen to apply surge protection devices, or SPDs, to process signal lines, transmitters, file severs and other important equipment as the source of surges is more obvious. However, a common source of surges is the AC power supply. It is important to note ...
Collection versus Prevention
... Early Streamer Emitter (ESE) More similar to the conventional lightning rod, ESE systems are lightning collectors. However, according to their manufacturers, they are designed to trigger the early initiation of upward streamers, which increases the efficiency of lightning collection as a way to exte ...
... Early Streamer Emitter (ESE) More similar to the conventional lightning rod, ESE systems are lightning collectors. However, according to their manufacturers, they are designed to trigger the early initiation of upward streamers, which increases the efficiency of lightning collection as a way to exte ...
Earthing High Voltage Apparatus for Work or Testing
... of work and Point(s) of Isolation, because earthing positions are above circuits which may be Live. In such situations, the requirements of the Company Safety Instructions are not reasonably practicable and a minimum of one earth shall be applied to the busbar to meet the requirements of the Safety ...
... of work and Point(s) of Isolation, because earthing positions are above circuits which may be Live. In such situations, the requirements of the Company Safety Instructions are not reasonably practicable and a minimum of one earth shall be applied to the busbar to meet the requirements of the Safety ...
4.4 Essential Electrical System Requirements
... 4.4.1.1 On-Site Generator Set. 4.4.1.1.1* Design Considerations. Dual sources of normal power shall be considered but shall not constitute an alternate source of power as described in this chapter. 4.4.1.1.1.1 Distri bution system arrangemen Ls shall be designed t.o minimize interntptions to the ele ...
... 4.4.1.1 On-Site Generator Set. 4.4.1.1.1* Design Considerations. Dual sources of normal power shall be considered but shall not constitute an alternate source of power as described in this chapter. 4.4.1.1.1.1 Distri bution system arrangemen Ls shall be designed t.o minimize interntptions to the ele ...
Selection, installation and assembly of surge protective devices
... installing power supply systems. All other protection measures such as lightning and surge protection for electrical systems and installations are secondary to the protection measures against indirect contact with protective conductors under consideration of the system configuration and the protecti ...
... installing power supply systems. All other protection measures such as lightning and surge protection for electrical systems and installations are secondary to the protection measures against indirect contact with protective conductors under consideration of the system configuration and the protecti ...
c-14-deee-5th-sem
... Sending end P.F iii) percentage regulation iv) Efficiency for the given receiving end condition Solve problems on short lines Compute the percentage regulation, efficiency of medium transmission lines with given receiving end conditions and line parameters using i) Nominal ( pie ) method ii) Nominal ...
... Sending end P.F iii) percentage regulation iv) Efficiency for the given receiving end condition Solve problems on short lines Compute the percentage regulation, efficiency of medium transmission lines with given receiving end conditions and line parameters using i) Nominal ( pie ) method ii) Nominal ...
34 2.8 NOISE 2.8.1 The Nyquist Noise Theorem We now want to
... device is Fn 1 . Another important point in the above is that noise figure is always based on an assumption that the noise power into the device derives from a resistive noise source at the standard temperature of 290 ºK. In working radar problems some people prefer noise figure and others prefer ...
... device is Fn 1 . Another important point in the above is that noise figure is always based on an assumption that the noise power into the device derives from a resistive noise source at the standard temperature of 290 ºK. In working radar problems some people prefer noise figure and others prefer ...
Noise
... device is Fn 1 . Another important point in the above is that noise figure is always based on an assumption that the noise power into the device derives from a resistive noise source at the standard temperature of 290 ºK. In working radar problems some people prefer noise figure and others prefer ...
... device is Fn 1 . Another important point in the above is that noise figure is always based on an assumption that the noise power into the device derives from a resistive noise source at the standard temperature of 290 ºK. In working radar problems some people prefer noise figure and others prefer ...
Managing Electrical Risks at the Workplace
... telephone, communication and data systems that are not near energised electrical wiring or equipment work on overhead electric lines and underground electrical services, or repair of consumer electrical equipment when unplugged from any electrical outlet socket. This Code is divided into two p ...
... telephone, communication and data systems that are not near energised electrical wiring or equipment work on overhead electric lines and underground electrical services, or repair of consumer electrical equipment when unplugged from any electrical outlet socket. This Code is divided into two p ...
Frequency-selective MEMS for miniaturized low
... selection in communication subsystems because of their high quality factor ( ’s in the tens of thousands) and exceptional stability against thermal variations and aging. In particular, the majority of heterodyning communication transceivers rely heavily upon the high- of SAW and bulk acoustic mechan ...
... selection in communication subsystems because of their high quality factor ( ’s in the tens of thousands) and exceptional stability against thermal variations and aging. In particular, the majority of heterodyning communication transceivers rely heavily upon the high- of SAW and bulk acoustic mechan ...
Micronote 130
... When further comparing these VC values with EQ 1, the PPP will be less than or equal to 1665 W at 6.4/83 μs (500 W at 10/1000 μs) when VC 31.0 V or VC 269 V. As a result, the TVS device will also meet the requirements of the DO-160D specification for Pin Injection tests of Waveform 4 at Level 3 ...
... When further comparing these VC values with EQ 1, the PPP will be less than or equal to 1665 W at 6.4/83 μs (500 W at 10/1000 μs) when VC 31.0 V or VC 269 V. As a result, the TVS device will also meet the requirements of the DO-160D specification for Pin Injection tests of Waveform 4 at Level 3 ...
Electromagnetic compatibility
Electromagnetic compatibility (EMC) is the branch of electrical sciences which studies the unintentional generation, propagation and reception of electromagnetic energy with reference to the unwanted effects (electromagnetic interference, or EMI) that such energy may induce. The goal of EMC is the correct operation, in the same electromagnetic environment, of different equipment which use electromagnetic phenomena, and the avoidance of any interference effects.In order to achieve this, EMC pursues two different kinds of issues. Emission issues are related to the unwanted generation of electromagnetic energy by some source, and to the countermeasures which should be taken in order to reduce such generation and to avoid the escape of any remaining energies into the external environment. Susceptibility or immunity issues, in contrast, refer to the correct operation of electrical equipment, referred to as the victim, in the presence of unplanned electromagnetic disturbances.Interference mitigation and hence electromagnetic compatibility is achieved by addressing both emission and susceptibility issues, i.e., quieting the sources of interference and hardening the potential victims. The coupling path between source and victim may also be separately addressed to increase its attenuation.