Electronic Instrumentation for a 3D EIT Application
... impedance value at low frequencies. On the other hand, at high frequencies we can obtain information about the internal composition of the cell due to the cytoplasmic resistance. Therefore, it is essential to study the bioimpedance properties and its equivalent electrical models. For measuring the i ...
... impedance value at low frequencies. On the other hand, at high frequencies we can obtain information about the internal composition of the cell due to the cytoplasmic resistance. Therefore, it is essential to study the bioimpedance properties and its equivalent electrical models. For measuring the i ...
ADP1870 英文数据手册DataSheet 下载
... The ADP1870/ADP1871 are versatile current-mode, synchronous step-down controllers that provide superior transient response, optimal stability, and current-limit protection by using a constant on-time, pseudo-fixed frequency with a programmable currentlimit, current-control scheme. In addition, these ...
... The ADP1870/ADP1871 are versatile current-mode, synchronous step-down controllers that provide superior transient response, optimal stability, and current-limit protection by using a constant on-time, pseudo-fixed frequency with a programmable currentlimit, current-control scheme. In addition, these ...
Single-Phase to Three-Phase Power Converters: State of the Art
... Notice that Enjeti et al. [45], [46] propose five new configurations, but just two of them will be presented in this section due to the dc-link midpoint connection; the other ones will be shown in Section II-A2. The topology in Fig. 7, in spite of reducing the number of power switches dramatically—c ...
... Notice that Enjeti et al. [45], [46] propose five new configurations, but just two of them will be presented in this section due to the dc-link midpoint connection; the other ones will be shown in Section II-A2. The topology in Fig. 7, in spite of reducing the number of power switches dramatically—c ...
PDF
... capacitors (C1,C2,C40) provide a dc bus voltage. A linear regulator (U13) provides tightly regulated 12V for the power supply PWM ic. Page 2 of the schematic “Isolated Flyback Power Supply” contains the control and power stages for the flyback converter. The PWM ic (U2) operates in open loop mode wi ...
... capacitors (C1,C2,C40) provide a dc bus voltage. A linear regulator (U13) provides tightly regulated 12V for the power supply PWM ic. Page 2 of the schematic “Isolated Flyback Power Supply” contains the control and power stages for the flyback converter. The PWM ic (U2) operates in open loop mode wi ...
Long Distance Digital Connection
... • Primary rate: – 23 64-Kbps B channels • Primary rate in Europe has 30 B channels ...
... • Primary rate: – 23 64-Kbps B channels • Primary rate in Europe has 30 B channels ...
Bulletin WT3000E-01EN WT3000E Series Precision Power Analyzers
... The fundamental frequencies of motors have become higher. The WT3000E allows harmonic measurements of signals with fundamental frequencies as high as 2.6 kHz. Evaluation of torque speed characteristics (/MTR option, cycle by cycle measurement) Torque speed can be evaluated based on the torque and re ...
... The fundamental frequencies of motors have become higher. The WT3000E allows harmonic measurements of signals with fundamental frequencies as high as 2.6 kHz. Evaluation of torque speed characteristics (/MTR option, cycle by cycle measurement) Torque speed can be evaluated based on the torque and re ...
Design of Delta Primary - Transposed zigzag Secondary (DTz
... designed and used to reduce the bad impacts of the harmonic in the distribution power system. The DTz transformer is constructed with delta connection in primary winding and the three transposed windings at the different core legs of secondary winding. The harmonic reduction method of the DTz transf ...
... designed and used to reduce the bad impacts of the harmonic in the distribution power system. The DTz transformer is constructed with delta connection in primary winding and the three transposed windings at the different core legs of secondary winding. The harmonic reduction method of the DTz transf ...
Wind Energy Systems for Electric Power - Van
... The theory of modern wind turbines has not been established before the 20th century. Currently wind turbines with three blades and horizontal shaft prevail. The driven electric generators are of the asynchronous or synchronous type, with or without interposed gearbox. Modern systems are designed for ...
... The theory of modern wind turbines has not been established before the 20th century. Currently wind turbines with three blades and horizontal shaft prevail. The driven electric generators are of the asynchronous or synchronous type, with or without interposed gearbox. Modern systems are designed for ...
balun basics primer
... impedance between the signals and ground. A related value is the turns ratio, which for a flux coupled balun transformer is the ratio of primary windings to secondary windings. The impedance ratio is the square of the turns ratio (i.e. a 1:2 turn ratio gives a 1:4 impedance ratio). A higher output i ...
... impedance between the signals and ground. A related value is the turns ratio, which for a flux coupled balun transformer is the ratio of primary windings to secondary windings. The impedance ratio is the square of the turns ratio (i.e. a 1:2 turn ratio gives a 1:4 impedance ratio). A higher output i ...
Advantages of a Novel Plasma Generator for the
... to better long-term reliability, because of the increased margin for back-off operation, as the available power exceeds the actual delivered power. For example, to generate 800 W RF power, a power transistor rated at 1.2 kW will have a longer lifetime compared to that rated for 800 W, which always o ...
... to better long-term reliability, because of the increased margin for back-off operation, as the available power exceeds the actual delivered power. For example, to generate 800 W RF power, a power transistor rated at 1.2 kW will have a longer lifetime compared to that rated for 800 W, which always o ...
Performance Analysis of LLC-LC Resonant Converter Fed
... stator windings are categorized as 1phase, 2phase or 3phase. The stator windings can be either trapezoidal or sinusoidal, depending on the interconnection of coils in the stator windings to give different types of back electromotive force. Rotors are made up of permanent magnets and vary from two to ...
... stator windings are categorized as 1phase, 2phase or 3phase. The stator windings can be either trapezoidal or sinusoidal, depending on the interconnection of coils in the stator windings to give different types of back electromotive force. Rotors are made up of permanent magnets and vary from two to ...
Utility frequency
The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the frequency of the oscillations of alternating current (AC) in an electric power grid transmitted from a power plant to the end-user. In large parts of the world this is 50 Hz, although in the Americas and parts of Asia it is typically 60 Hz. Current usage by country or region is given in the list of mains power around the world.During the development of commercial electric power systems in the late 19th and early 20th centuries, many different frequencies (and voltages) had been used. Large investment in equipment at one frequency made standardization a slow process. However, as of the turn of the 21st century, places that now use the 50 Hz frequency tend to use 220–240 V, and those that now use 60 Hz tend to use 100–127 V. Both frequencies coexist today (Japan uses both) with no great technical reason to prefer one over the other and no apparent desire for complete worldwide standardization.Unless specified by the manufacturer to operate on both 50 and 60 Hz, appliances may not operate efficiently or even safely if used on anything other than the intended frequency.