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... even have a smoother output voltage than traditional two-level converters. Multilevel inverters have an arrangement of switches, capacitors and voltage sources for production of stepped sine wave output at their output terminals. By using proper control, the switching devices can generate stepped ou ...
FAN1539B / FAN1540B — 1A/1.3A, LDO with Low Quiescent Current
FAN1539B / FAN1540B — 1A/1.3A, LDO with Low Quiescent Current

Simulated Inductance
Simulated Inductance

... • Once you have entered the transfer function into MatLAB, you can use a predefined function ‘bode’ to automatically generate plots of the magnitude and phase vs. frequency. ...
ZLDO485 • 4.85 VOLT ULTRA LOW DROPOUT REGULATOR
ZLDO485 • 4.85 VOLT ULTRA LOW DROPOUT REGULATOR

... 2). Post Converter Regulation A common problem with multiple output switch mode converters is that only one output can be used in the feedback control loop of the switching regulator. Thus only one output is fully regulated. All other outputs are prone to tracking errors that occur if the load on an ...
RT9241A/B - Tehnari.ru
RT9241A/B - Tehnari.ru

... impedance to turn off both high and low side MOSFET in the power stage and initial the hiccup mode protection. The SS pin voltage is pulled low with a 10A current after it is less than 90% VDD. The converter restarts after SS pin voltage < 0.2V. Three times of OCP disable the converter and only rel ...
Title - K.f.u.p.m. ISI
Title - K.f.u.p.m. ISI

... The paper describes a new architecture for a split-gate flash EEPROM memory array. The new array architecture provides increased speed and less susceptibility to soft writes during read operations. A unique circuit design and operation method obviates the need for applying high erase voltage in the ...
Paper Title (use style: paper title) - Scientific Bulletin of Electrical
Paper Title (use style: paper title) - Scientific Bulletin of Electrical

... core have been developed and studied [14]. The models take into account even the time variation of induction motor parameters and take into consideration the skin effect from rotor bars (squirrel-cage motor) when the motor is powered through a converter. Also, a set of correctional coefficients (sat ...
Instrumentation for High Performance Nonintrusive Electrical Load
Instrumentation for High Performance Nonintrusive Electrical Load

... used in security assessments and stability analyses for distribution systems. Energy service companies and facility owners would like an inexpensive means to measure and verify savings from energy efficiency improvements. The commercial market has shown dramatic advances in the availability, sophist ...
1.2 V to 37 V adjustable voltage regulators
1.2 V to 37 V adjustable voltage regulators

... circuits in TO-220, TO-220FP and D²PAK packages intended for use as positive adjustable voltage regulators. They are designed to supply more than 1.5 A of load current with an output voltage adjustable over a 1.2 to 37 V range. The nominal output voltage is selected by means of a resistive divider, ...
LM217, LM317 1.2 V to 37 V adjustable voltage regulators Description -
LM217, LM317 1.2 V to 37 V adjustable voltage regulators Description -

SIGMA  Advanced Generator Protection and Control
SIGMA Advanced Generator Protection and Control

AU4101266270
AU4101266270

... imbalanced capacitive compensation. It is a “hybrid” series compensation scheme, where the series capacitive compensation in one phase is created using a single-phase TCSC in series with a fixed capacitor (Cc), and the other two phases are compensated by fixed series capacitors (C). The TCSC control ...
ZLDO500 • 5.0 VOLT ULTRA LOW DROPOUT REGULATOR
ZLDO500 • 5.0 VOLT ULTRA LOW DROPOUT REGULATOR

... circuit will shut down the regulator if its ambient rises above 125°C. Thus, the regulator could be used to disable a circuit in the event of the ambient temperature within which the circuit is mounted becoming too high. Any internal power dissipation caused as a result of supplying load current, wi ...
Power for Suspended Scaffolds
Power for Suspended Scaffolds

... Buck/Booster Transformers Buck/Booster transformers are the most common transformers used in suspended scaffolding applications. As the name implies, these transformers can have two different uses, and they are usually preset by the manufacturer to either raise or lower voltage. “Bucking” power is d ...
Design Options for High Efficiency Linear Handset Power Amplifiers
Design Options for High Efficiency Linear Handset Power Amplifiers

... with the load impedance modulation associated with the outphasing angle. Good linearity and efficiency has been observed, however, with CMOS-based output stages operating as voltage-mode Class D amplifiers which are very immune from load changes, as shown in fig. 5 (although the VMCD amplifiers can ...
INA116 - Texas Instruments
INA116 - Texas Instruments

... 100MΩ R1 ...
IntelliMotor ITM-23Q Hardware Manual ®
IntelliMotor ITM-23Q Hardware Manual ®

... combinations of speed and voltage at which a motor cannot be continuously operated without damage. The performance curves shown in this manual are all intended to be used at 100% duty cycle when used in combination with a Bimba OLE. Please also keep in mind that a step motor typically reaches maximu ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)

When to Use Open-Collector and Relay Outputs
When to Use Open-Collector and Relay Outputs

... The Open-Collector Output is a transistor circuit configuration used in a wide variety of electronic designs including many integrated circuits (ICs). Three parts make up a transistor: the emitter, the base and the collector. These three parts form two distinct junctions, the emitter-base junction a ...
ATE Quick Start Guide
ATE Quick Start Guide

... example, the load is rapidly changing in value, or if the power supply is programmed with step functions (square wave, pulse, etc.) and maximum dynamic performance is expected. If so, set the unit to “fast” mode by referring to the full Operator Manual (see PAR. 1.1). Note that ripple in “fast” mode ...
Slide 1
Slide 1

... operation into a 1:1 VSWR.  The Class-B PA operated at 71% efficiency, while the Class-E PA operated at 92% efficiency.  The performance of the Class-B and –E circuits were then compared over eight points on a 2:1 VSWR circle. ...
Pick the right turns ratio for a Fly-Buck converter
Pick the right turns ratio for a Fly-Buck converter

... The first curve is the primary output voltage, which shows a linear relationship between duty factor and output voltage. The remainder shows that there is not a linear relationship for the secondary output voltage. There are two things that are degrading the secondary regulation. On the left, at low ...
4 chapter AC motors starting and protection systems
4 chapter AC motors starting and protection systems

How to change the pulse input voltage threshold on
How to change the pulse input voltage threshold on

... meter (electrical, thermal, gas, water, etc). Pulses are brief bursts of DC (direct current) voltage, with each burst having an abrupt beginning (or rise) and an abrupt ending (or decay), and their output is typically proportional to energy consumed (e.g. 1 pulse = 10kWh). This posts documents how t ...
Fuzzy Hysteresis Control and Parameter Optimization of a Shunt
Fuzzy Hysteresis Control and Parameter Optimization of a Shunt

... (is) or active power filter currents (if). Both methods are equivalent. In fact, the error signal at the input of the current regulator has the same dynamic; and only its sign is modified (e = i*fj − i fj = isj − isj* , j = 1, 2, 3). Our algorithm focuses on calculating and directly controlling the ...
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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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