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Evaluation Board User Guide UG-310
Evaluation Board User Guide UG-310

... ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken ...
Chapter 18 Quiet Converter Design Dr.
Chapter 18 Quiet Converter Design Dr.

MAX1692 Low-Noise, 5.5V-Input, PWM Step-Down Regulator General Description
MAX1692 Low-Noise, 5.5V-Input, PWM Step-Down Regulator General Description

... Low-Noise, 5.5V-Input, PWM Step-Down Regulator The MAX1692 step-down, pulse-width-modulated (PWM), DC-DC converter has an adjustable output range from 1.25V to the input voltage. An internal synchronous rectifier improves efficiency and eliminates an external Schottky diode. Fixed-frequency operati ...
Halogen Lamp Modeling For Low Voltage Power - HAL
Halogen Lamp Modeling For Low Voltage Power - HAL

... which delivers the power to the lamp by passing through the high frequency transformer (HFT). The two inverters transistors are considered in the ATP-EMTP model as a diode in series with a time controlled switch. The transistors are driven in the model, by a pulse train signal source at 35 kHz delay ...
PRESETTABLE UP/DOWN COUNTER BINARY OR BCD DECADE
PRESETTABLE UP/DOWN COUNTER BINARY OR BCD DECADE

RA20H8087M 数据资料DataSheet下载
RA20H8087M 数据资料DataSheet下载

... precautions are required. 4.In order to maximize reliability of the equipment, it is better to keep the devices temperature low. It is recommended to utilize a sufficient sized heat-sink in conjunction with other cooling methods as needed (fan, etc.) to keep the case temperature for RA series produc ...
litemax lf1745
litemax lf1745

LM193/LM293/LM393/LM2903 Low Power Low Offset Voltage Dual
LM193/LM293/LM393/LM2903 Low Power Low Offset Voltage Dual

... Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode range, the comparator will provide a proper output state. The low input voltage state must not be less than −0.3V (or 0.3V below the magnitude of the negative power sup ...
Station 1 - POSITION SENSOR CIRCUIT
Station 1 - POSITION SENSOR CIRCUIT

... This circuit is also a voltage divider circuit, but unlike the temperature sensor circuit, it monitors voltage at the sensor by a sensor return line (M). Although the temperature sensor and position sensor circuits are both voltage divider circuits, the total resistance of the position sensor circui ...
PFC FrontEndTM Power Factor Corrected AC-DC FrontEnd
PFC FrontEndTM Power Factor Corrected AC-DC FrontEnd

... The PFC FrontEnd consists of an off-line single phase, power-factor-corrected front end, EMI filter, cooling fan, customer interface and associated housekeeping circuits. Input AC mains voltage is applied to a terminal block. The input current is passed through an EMI filter designed to meet conduct ...
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Document

... • automotive starter-alternator system for mild (42V d.c.) and heavy (150-600V d.c.) hybrid vehicles have been proposed in various configurations. The IM solution has been brought to markets by Toyota and Honda. Up to 35% fuel consumption reduction in town driving has been reported for Toyota Prius ...
OPA227, OPA2227, OPA4227, OPA228, OPA2228, OPA4228
OPA227, OPA2227, OPA4227, OPA228, OPA2228, OPA4228

... Lead Temperature (soldering, 10s) ................................................. 300°C ...
Waveform display devices
Waveform display devices

...  Why Test & Calibration  As components age and equipment undergoes changes in temperature or humidity or sustains mechanical stress, performance gradually degrades. This is called drift.  When this happens your test results become unreliable and both design and performance quality suffer.  While ...
Circuit Elements Are People Too—Using Personification In Circuit
Circuit Elements Are People Too—Using Personification In Circuit

... voltage across the load (RL) that is proportional to the duty cycle of the perpetually toggling ...
study of solution towards ground leakage current via inverter
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... correct answer. The candidate has to choose the correct answer by clicking on the bubble (⃝) placed before the choice. 10. For numerical answer type questions, each question will have a numerical answer and there will not be any choices. For these questions, the answer should be enteredby using the ...
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... What is the source of a rotating object’s angular acceleration? It can’t be just a force, because it matters where on the object that force is applied. The answer lies in the quantity called torque. ...
KF3118871892
KF3118871892

... convergence analysis, and thus, only approximate MPPT is achieved. Although neural network control methods can provide better MPPT performance than traditional and fuzzy logic control methods, neural network control methods require the measurements of solar radiation and cell temperature. In additio ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

UC2855A 数据资料 dataSheet 下载
UC2855A 数据资料 dataSheet 下载

... The UC3855A/B provides all the control features necessary for high power, high frequency PFC boost converters. The average current mode control method allows for stable, low distortion AC line current programming without the need for slope compensation. In addition, the UC3855 utilizes an active snu ...
Spark Testers.indd - De Dietrich Process Systems
Spark Testers.indd - De Dietrich Process Systems

... tester is conveniently portable and rechargeable. It is very accurate and results are easy to interpret. A constant potential of 6000 volts DC is assured by the solid-state circuitry. Objects being tested must be electrically grounded to the spark tester for safety and proper operation. In operation ...
INDUSTRIAL ELECTRICITY/ELECTRONICS TECHNOLOGY (ILT)
INDUSTRIAL ELECTRICITY/ELECTRONICS TECHNOLOGY (ILT)

... This course covers the commonly utilized circuits found in all areas of electronics. These include the various rectifier, filter, voltage regulating circuits, and linear solid-state amplifier circuits. The entire course emphasizes the typical circuits, their principles of operation, and troubleshoot ...
ISL69147 Data Short
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... The ISL69147 is a digital dual output, multiphase PWM controller designed to be compliant with AMD SVI2 specifications. The digital multiphase controller can be configured to support any desired phase assignments up to a maximum of 7 phases across the two outputs (X and Y). For example, 6+1, 5+2, 4+ ...
DC Motor Theory
DC Motor Theory

... its south pole moves directly in line with the field's north pole (Fig. 12-4b). When the opposite poles are at their strongest attraction, the armature will be "locked up" and will resist further attempts to continue spinning. For the armature to continue its rotation, the armature's polarity must ...
IEC 61000-4-5 standard overview
IEC 61000-4-5 standard overview

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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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