2 Faults, types and effects 2.1 The development of simple distribution systems
... on the power factor of the system. Hence, it is a usual practice to charge penalties to a consumer whenever the consumer’s system has lesser power factor, since it gives the idea of useless power to be generated by the source. Obviously, if one can reduce the amount of ‘useless’ power, power that is ...
... on the power factor of the system. Hence, it is a usual practice to charge penalties to a consumer whenever the consumer’s system has lesser power factor, since it gives the idea of useless power to be generated by the source. Obviously, if one can reduce the amount of ‘useless’ power, power that is ...
A technique to determine the electromagnetic properties of soil
... earth’s radius (a). At longer distances (d > λ1/3a2/3 and h < λ2/3a1/3), the residue series is used; at shorter distances (h > λ1/3a2/3 and h < λ2/3a1/3), the model employs the extended form of the Sommerfeld17 flat-earth theory, and geometric optics are used to calculate field strength at distances ...
... earth’s radius (a). At longer distances (d > λ1/3a2/3 and h < λ2/3a1/3), the residue series is used; at shorter distances (h > λ1/3a2/3 and h < λ2/3a1/3), the model employs the extended form of the Sommerfeld17 flat-earth theory, and geometric optics are used to calculate field strength at distances ...
Diapositiva 1
... Note: Nowadays, more and more non-linear loads (i.e. loads that draw current with a waveform that is not the same as that of the supply voltage) such us soft starters, UPS or frequency converters are used, causing elevated levels of harmonics. ...
... Note: Nowadays, more and more non-linear loads (i.e. loads that draw current with a waveform that is not the same as that of the supply voltage) such us soft starters, UPS or frequency converters are used, causing elevated levels of harmonics. ...
TOA Electronics Amplifier Guide
... used in the system. Will the system be used with microphones? A CD player? A telephone exchange? Due to standardization, many sources can be treated similarly — for example, CD and DVD players, VCRs and computer sound cards all provide unbalanced line level outputs, usually with a similar output lev ...
... used in the system. Will the system be used with microphones? A CD player? A telephone exchange? Due to standardization, many sources can be treated similarly — for example, CD and DVD players, VCRs and computer sound cards all provide unbalanced line level outputs, usually with a similar output lev ...
Effects of Op-Amp Finite Gain and Bandwidth
... RF R1 + RF Note that A0f is defined here as a positive quantity so that the negative sign for the inverting gain is retained in the transfer function for Vo /Vi . Let the radian gain-bandwidth product of the inverting amplifier with feedback be denoted by ω x . It follows from Eqs. (14) and (15) th ...
... RF R1 + RF Note that A0f is defined here as a positive quantity so that the negative sign for the inverting gain is retained in the transfer function for Vo /Vi . Let the radian gain-bandwidth product of the inverting amplifier with feedback be denoted by ω x . It follows from Eqs. (14) and (15) th ...
PowerPoint Presentation, click here.
... IF ANTENNA HAS GAIN, MAKE SURE THE PERIPHERAL ITEMS (e.g. BALUNS, CONNECTORS, ETC) ARE NOT LOSSY SELECT THE BEST MATCHED FEEDLINE (IMPEDANCE) TO THE IMPEDANCE OF THE ANTENNA USE “MATCH BOXES” TO FINE TUNE YOUR SYSTEM, NOT AS WAY OF MATCHING A LOUSY ANTENNA SELECT A LOW LOSS FEEDLINE, IF OPERATING AT ...
... IF ANTENNA HAS GAIN, MAKE SURE THE PERIPHERAL ITEMS (e.g. BALUNS, CONNECTORS, ETC) ARE NOT LOSSY SELECT THE BEST MATCHED FEEDLINE (IMPEDANCE) TO THE IMPEDANCE OF THE ANTENNA USE “MATCH BOXES” TO FINE TUNE YOUR SYSTEM, NOT AS WAY OF MATCHING A LOUSY ANTENNA SELECT A LOW LOSS FEEDLINE, IF OPERATING AT ...
Power System Series Resonance Studies by Modified Admittance
... yielded some utility benefits such as power factor correction, voltage support and release of system capacity. However, their interaction with system inductive supply circuit [1, 2] causes power quality problems by way of amplifying high order harmonics. These could lead to overheating, failure of t ...
... yielded some utility benefits such as power factor correction, voltage support and release of system capacity. However, their interaction with system inductive supply circuit [1, 2] causes power quality problems by way of amplifying high order harmonics. These could lead to overheating, failure of t ...
Nominal impedance
Nominal impedance in electrical engineering and audio engineering refers to the approximate designed impedance of an electrical circuit or device. The term is applied in a number of different fields, most often being encountered in respect of:The nominal value of the characteristic impedance of a cable or other form of transmission line.The nominal value of the input, output or image impedance of a port of a network, especially a network intended for use with a transmission line, such as filters, equalisers and amplifiers.The nominal value of the input impedance of a radio frequency antennaThe actual impedance may vary quite considerably from the nominal figure with changes in frequency. In the case of cables and other transmission lines, there is also variation along the length of the cable, if it is not properly terminated. It is usual practice to speak of nominal impedance as if it were a constant resistance, that is, it is invariant with frequency and has a zero reactive component, despite this often being far from the case. Depending on the field of application, nominal impedance is implicitly referring to a specific point on the frequency response of the circuit under consideration. This may be at low-frequency, mid-band or some other point and specific applications are discussed in the sections below.In most applications, there are a number of values of nominal impedance that are recognised as being standard. The nominal impedance of a component or circuit is often assigned one of these standard values, regardless of whether the measured impedance exactly corresponds to it. The item is assigned the nearest standard value.