NOT
... defined, by giving the voltage and current relationships with the single-ended modes The definition order determines the matrix storage, so the matrix data format is the same for all matrices More than one set of modes can be defined in the same file, even if the corresponding matrices are not s ...
... defined, by giving the voltage and current relationships with the single-ended modes The definition order determines the matrix storage, so the matrix data format is the same for all matrices More than one set of modes can be defined in the same file, even if the corresponding matrices are not s ...
Chapter 5 Low-Noise Design Methodology
... sometimes better to use a coupling or input transformer. When it is not possible to achieve the necessary noise figure using device selection, transformer coupling may be the solution. Very low resistance sources can cause this problem. • The use of an input transformer between the detector and ampl ...
... sometimes better to use a coupling or input transformer. When it is not possible to achieve the necessary noise figure using device selection, transformer coupling may be the solution. Very low resistance sources can cause this problem. • The use of an input transformer between the detector and ampl ...
Capacitor Self
... * Often, low-Q ferrite bead inductors are used instead of resistors. These have a lower d.c. power loss in higher-power circuits. ...
... * Often, low-Q ferrite bead inductors are used instead of resistors. These have a lower d.c. power loss in higher-power circuits. ...
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... What this equation shows is that estimated impedance differs from the true impedance Z by the term that is dependant on the S/N ratio (Eg/En) and values of resistors R, Rg and the impedance Z. We can conclude: 1. The signal generator must supply a high voltage, to assure high S/N. In practice, we ne ...
... What this equation shows is that estimated impedance differs from the true impedance Z by the term that is dependant on the S/N ratio (Eg/En) and values of resistors R, Rg and the impedance Z. We can conclude: 1. The signal generator must supply a high voltage, to assure high S/N. In practice, we ne ...
Short Circuit Current Calculations
... secondary. This applied voltage divided by the rated primary voltage (times 100) is the impedance of the transformer. Example: For a 480 Volt rated primary, if 9.6 volts causes secondary full load current to flow through the shorted secondary, the transformer impedance is 9.6/480 = .02 = 2%Z. * Note ...
... secondary. This applied voltage divided by the rated primary voltage (times 100) is the impedance of the transformer. Example: For a 480 Volt rated primary, if 9.6 volts causes secondary full load current to flow through the shorted secondary, the transformer impedance is 9.6/480 = .02 = 2%Z. * Note ...
Means for minmizing pulse reflections in linear delay lines loaded
... utilization circuit and in order to synchronize them with 40 selected, together with the impedance of the associated elements at the termination of the line, to match the the next available clock pulse from the pulse generator, characteristic impedance of the line as a whole, being, in they may be d ...
... utilization circuit and in order to synchronize them with 40 selected, together with the impedance of the associated elements at the termination of the line, to match the the next available clock pulse from the pulse generator, characteristic impedance of the line as a whole, being, in they may be d ...
The Amplifier Input Protection Circuit for a Intraoperative Evoked
... higher current flowing through diode. Unfortunately this reduction would be at least three orders of magnitude if it could have considerable effect on noise level. In that case we would need diodes with a current capability of tens of amperes, which have too large parasitic capacitance. On the other ...
... higher current flowing through diode. Unfortunately this reduction would be at least three orders of magnitude if it could have considerable effect on noise level. In that case we would need diodes with a current capability of tens of amperes, which have too large parasitic capacitance. On the other ...
Optimization-based steady state analysis of three phase self
... There are three external elements of self-excited induction generator that can be controlled; these are the speed, excitation capacitance, and load. Changing any one of these elements will change Xm and F . In order to confirm the feasibility, reliability and accuracy of the proposed two methods, th ...
... There are three external elements of self-excited induction generator that can be controlled; these are the speed, excitation capacitance, and load. Changing any one of these elements will change Xm and F . In order to confirm the feasibility, reliability and accuracy of the proposed two methods, th ...
NI 9758 Port Fuel Injector Driver User Manual
... If for the entire duration of the injection event, neither peak nor hold current levels are reached, then an open circuit will be reported for the channel. It is possible that an open condition may be falsely reported under certain conditions, even though a fuel injector is properly connected. Examp ...
... If for the entire duration of the injection event, neither peak nor hold current levels are reached, then an open circuit will be reported for the channel. It is possible that an open condition may be falsely reported under certain conditions, even though a fuel injector is properly connected. Examp ...
development of an instrument to measure sound absorption
... adiabatically. In the frequency region between these isothermal and adiabatic compression, the heat exchange results in loss of sound energy. This loss is high if the sound propagates parallel to the plane of fibers and may account up to 40% of sound attenuation. It is suitable for higher frequencie ...
... adiabatically. In the frequency region between these isothermal and adiabatic compression, the heat exchange results in loss of sound energy. This loss is high if the sound propagates parallel to the plane of fibers and may account up to 40% of sound attenuation. It is suitable for higher frequencie ...
Chapter 13
... • A transformer is a magnetic device that takes advantage of mutual inductance. • It is generally a four terminal device comprised of two or more magnetically coupled coils. • The coil that is connected to the voltage source is called the primary. • The one connected to the load is called the second ...
... • A transformer is a magnetic device that takes advantage of mutual inductance. • It is generally a four terminal device comprised of two or more magnetically coupled coils. • The coil that is connected to the voltage source is called the primary. • The one connected to the load is called the second ...
1. Introduction
... employ floating passive elements for their realization. Note that the employment of only grounded capacitors and resistors is advantageous in the reduction of parasitic impedance effects as well as in easy integrated circuit implementation [11]-[12]. The biquads presented in [4], [6], [9] require re ...
... employ floating passive elements for their realization. Note that the employment of only grounded capacitors and resistors is advantageous in the reduction of parasitic impedance effects as well as in easy integrated circuit implementation [11]-[12]. The biquads presented in [4], [6], [9] require re ...
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.