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5B39-02中文资料
5B39-02中文资料

Proceedings of the 15th IEEE International Symposium
Proceedings of the 15th IEEE International Symposium

... done carefully. It requires quite a lot of manual adjustments, because any amplitude and/or phase shift between the compensation signal and the actual current ripples causes additional ripples. With the purpose to increase the performances of the input current control loop and to avoid the difficult ...
In this paper, a new single-phase cascaded multilevel inverter is
In this paper, a new single-phase cascaded multilevel inverter is

OPA551 OPA552 High-Voltage, High-Current OPERATIONAL AMPLIFIERS
OPA551 OPA552 High-Voltage, High-Current OPERATIONAL AMPLIFIERS

... The OPA551 and OPA552 may be operated from power supplies of ±4V to ±30V, or a total of 60V with excellent performance. Most behavior remains unchanged throughout the full operating voltage range. Parameters that vary significantly with operating voltage are shown in the Typical Performance Curves. ...
BD6393FP
BD6393FP

... BD6393FP,BD6395FP are the simple type that provides the minimum function for driving stepping motor and various protection circuits. As for its basic function, it is a low power consumption bipolar PWM constant current-drive driver with power upply’s rated voltage of 36V and rated output current of ...
Micronote 128
Micronote 128

... direction since they conduct at low voltage in the negative direction and would clip off one side. This problem would also occur with signal lines. For low current unidirectional applications in which polarity is of no importance, engineers occasionally specify bi-directional devices to ensure again ...
High-Voltage, High-Current Operational Amplifier (Rev. F
High-Voltage, High-Current Operational Amplifier (Rev. F

... The OPA547 is a low-cost, high-voltage/high-current operational amplifier ideal for driving a wide variety of loads. A laser-trimmed monolithic integrated circuit provides excellent low-level signal accuracy and high output voltage and current. The OPA547 operates from either single or dual supplies ...
TPA1517 数据资料 dataSheet 下载
TPA1517 数据资料 dataSheet 下载

... Figure 24. Standby, Mute, and Normal (On) Operating Conditions The designer must take care to place the control voltages within the defined ranges for each desired mode, whenever an external circuit is used to control the input voltage at the M/SB terminal. The undefined area can cause unpredictable ...
HI-200, HI-201 Datasheet
HI-200, HI-201 Datasheet

... All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9001 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes ...
Precision Low Dropout Linear Controllers (Rev. A)
Precision Low Dropout Linear Controllers (Rev. A)

Digital Simulation of the Generalized Unified Power Flow Controller
Digital Simulation of the Generalized Unified Power Flow Controller

... 48-pulse converters are obtained by combining two or four (12-pulse) VSI, respectively, with the specified phase shift between all converters. For high-power applications with low distortion, the best option is the 48-pulse converter, although using parallel filters tuned to the 23th–25th harmonics ...
Modeling of the Starting Performance of Large Solid-Pole Synchronous
Modeling of the Starting Performance of Large Solid-Pole Synchronous

... is made from a solid body, not from laminated steel; and there are no damping bars on the SPSM’s rotor surface. Although there are no damping windings on its rotor, eddy currents are induced on the rotor surface during starting because the rotor is made from a solid metal body with high conductivity ...
X-Ray Generators
X-Ray Generators

TOP221 - Power Integrations
TOP221 - Power Integrations

ACS754xCB-130 - Allegro Microsystems
ACS754xCB-130 - Allegro Microsystems

... B Perimeter through-holes recommended C Branding scale and appearance at supplier discretion ...
Using the Loss-Free Resistor concept to design a simple ac
Using the Loss-Free Resistor concept to design a simple ac

... and the HB-LEDs [3-6]. Furthermore, it is a well-known fact that the low-frequency harmonic content of the line current must comply with specific regulations (EN 61000-3-2 [7-10] and the ENERGY STAR® program [10]). Traditionally, as these regulations establish a very strict harmonic content for ligh ...
AP1534  PWM CONTROL 2A STEP-DOWN CONVERTER Description
AP1534 PWM CONTROL 2A STEP-DOWN CONVERTER Description

... AP1534 consists of step-down switching regulator with PWM control. These devices include a reference voltage source, oscillation circuit, error amplifier, internal PMOS. ...
PDF
PDF

... in analog signal processing. The main building block of analog signal processing circuits is a multiplier such as frequency translators, modulators, automatic gain controllers etc. The Gilbert cell is a most oldest and popular structure in IC technologies due to wide dynamic range and high frequenci ...
Instructions for muon lifetime experiment - CASE
Instructions for muon lifetime experiment - CASE

... you will learn the latest version. As of October 2010 the procedure is: * Raise the base charging potentiometer to 2.2 turns. This will raise the base charging supply to voltage and result in positive charge travelling up the chain to the terminal. The Laddertron charging ammeter should show ~35 µA. ...
Can-Stack Stepper Motor Linear
Can-Stack Stepper Motor Linear

... 25% duty cycle is obtained by a special winding or by running a standard motor at double the rated voltage. ...
LINEAR VARIABLE DIFFERENTIAL TRANSFORMER
LINEAR VARIABLE DIFFERENTIAL TRANSFORMER

... hydrogen annealed. This gives low harmonics, low null voltage and a high sensitivity. This is slotted longitudinally to reduce eddy current losses. The assembly is placed in stainless steel housing and the end lids provide electrostatic and electromagnetic shielding. The frequency of ac voltage appl ...
HA-1 Manual
HA-1 Manual

... speed. Experienced operators appreciate its stability and precision of operation, and novice operators discover a new command of CW that leads to proficiency and unsuspected enjoyment. The keyer operates much in the same way as a tape transmitter; the dash-dot and mark-space ratios remain constant o ...
as a PDF - Takeoff Projects
as a PDF - Takeoff Projects

... topology capable of inversion (dc–ac), boosting and bucking the voltage and MPPT. The basic idea behind the proposed integrated configuration is shown in Fig. 2(a). A detailed view of Fig. 2(a) is shown in Fig. 2(b) along with an example (electrolysis) application. A combination of PV and FC sources ...
Analogical Modelling and Numerical Simulation of the Single
Analogical Modelling and Numerical Simulation of the Single

... and when the angle α is 90° or 270° it has a minimum one, which depends on fα. Figure 4b shows that the u2 voltage amplitude decreases when the angle α is approaching to 450° (a complete revolution). In this graph the amplitude of the u2 voltage was increased by 100 times, so it can be observed the ...
MAX1744/MAX1745 High-Voltage, Step-Down DC-DC Controllers in µMAX General Description
MAX1744/MAX1745 High-Voltage, Step-Down DC-DC Controllers in µMAX General Description

... In both cases, the voltage is regulated by the error comparator. For low duty cycles (<33%), the MOSFET is turned on for the minimum on-time, causing fixed-ontime operation. During the MOSFET on-time, the output voltage rises. Once the MOSFET is turned off, the voltage drops to the regulation thresh ...
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Variable-frequency drive



A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.
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