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Efficiency Improvement of 3 Phase Induction Motor
Efficiency Improvement of 3 Phase Induction Motor

ppt_ch16
ppt_ch16

...  Ceramic: Available in a wide range of values because Kε can be tailored to provide almost any desired value of capacitance. Often used for temperature compensation (to increase or decrease capacitance with a rise in temperature).  Surface-mount: Also called chip capacitors. Like chip resistors, c ...
SA602A RF mixer
SA602A RF mixer

... Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assume ...
NUREG/CR-4570 SAND86-0299 RP DESCRIPTION  AND  TESTING  OF  AN ...
NUREG/CR-4570 SAND86-0299 RP DESCRIPTION AND TESTING OF AN ...

... the heater. The geometry of the space around a :terminal screw is such that any heating element of homogeneous composition must have a very small aspect ratio (length of current path divided by area perpendicular to current'flow).. The low aspect ratio, coupled with the relatively low allowable hea ...
Chapter 2 PLC Hardware Components - E-Learning/An
Chapter 2 PLC Hardware Components - E-Learning/An

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... The inverter is capable of supplying current and voltage for overloads exceeding 100% and up to 200% of full load current. A visual indicator and audible alarm indicates overload operation. For greater currents or longer time duration, the inverter has electronic current-limiting protection to preve ...
In this discussion we cover 27MHz transmitters and receivers
In this discussion we cover 27MHz transmitters and receivers

... A super-regenerative design is not universally used because it is much more noisy than conventional reception and is not suitable for voice transmission. However it is used in simple walkie-talkies and this is why they are so noisy - as will be shown at the end of this article. When a signal of the ...
Drive Solutions for the Global Cement Industry
Drive Solutions for the Global Cement Industry

... a simpler, more reliable inverter design. Since mechanical flow devices are not used, process interruptions caused by mechanical failures are minimized. ...
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3 Amp - DCC Track Booster - 2011 (LMD18200)

... This booster circuit is designed to have a fixed, overload current setting of between 3.2 and 3.5 amps. The variable resistor R10 shown on the schematic would only be used if a lower overload current setting. Under normal operating conditions the position of R10 is short circuited by a path on the c ...
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MAX6672/MAX6673 PWM Output Temperature Sensors in SC70 Packages General Description

... MAX6673 that sense their own die temperatures must be mounted on or close to the object whose temperature they are intended to measure. Because there is a good thermal path between the SC70 package's metal leads and the IC die, the MAX6672/MAX6673 can accurately measure the temperature of the circui ...
AD9850 - Analog Devices
AD9850 - Analog Devices

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... • What is logic design? – determining the collection of digital logic components to perform a specified control and/or data manipulation and/or communication function and the interconnections between them – which logic components to choose? – there are many implementation technologies (e.g., off-the ...
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500 Series Manual

... Q. Can I run two or more motors from the same drive? A. Not recommended. The I.R. Compensation (regulation) and Current Limit circuits would have difficulty sensing the different load on each motor. Q. Can I change the horsepower of my motor and still use the same control? A. Yes, provided you do no ...
Models of disturbances in power networks for testing frequency
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... whose character and frequency of occurrence do not depend on fundamental frequency of the disturbed power waveform. These mostly comprise very short transient overvoltages. Such disturbances are related to the capacitors banks switching, active protection or atmospheric discharge. The second group i ...
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BDTIC www.BDTIC.com/infineon Technical Report TR104 RF and Protection Devices

... transistor BFP740 from Infineon Technologies for the 3.5GHz WiMax application. The LNA brings a gain of 15dB on the frequency band from 3.3GHz to 3.7GHz with a noise figure of 0.95dB (including the SMA connectors and PCB losses of 0.1dB). Furthermore, this device provides an unconditionally stabilit ...
Field assessment of induction motor efficiency
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... ➤ Generator Frequency and Voltage Matching Control. Pulse governor and exciter reference points to bring a generator into synchronism acceptance criteria. Pulse interval and pulse width parameters are configurable for multiple synchronization situations. The control supports either fixed or proporti ...
1. PDF dokument
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... feedback to produce oscillation. The NIC is loaded by an external lumped inductor to determine the frequency of the oscillation. DC bias current is fed through the center tap of the inductor on the positive side and through the 56 Ω resistor to the common-emitter node on the negative side. In this C ...
AVR496: Brushless DC Motor Control using
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... The Timer/Counter1 (TC1) module of the ATtinyX61 family is very well suited for driving threephase motors. It can be run from a 64MHz PLL, and has a resolution of 10 bits. Six PWM outputs can be generated from this timer, grouped into three complementary output pairs with configurable dead-time. The ...
ADA4932-1 数据手册DataSheet 下载
ADA4932-1 数据手册DataSheet 下载

... between the supply pins (VS) times the quiescent current (IS). The power dissipated due to the load drive depends upon the particular application. The power due to load drive is calculated by multiplying the load current by the associated voltage drop across the device. RMS voltages and currents mus ...
BDTIC www.BDTIC.com/infineon Advanced Diff. Speed Sensor TLE4941plusC
BDTIC www.BDTIC.com/infineon Advanced Diff. Speed Sensor TLE4941plusC

... The differential Hall sensor IC detects the motion of ferromagnetic and permanent magnet structures by measuring the differential flux density of the magnetic field. To detect the motion of ferromagnetic objects the magnetic field must be provided by a back biasing permanent magnet. Either south or ...
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Buck converter



A buck converter is a voltage step down and current step up converter.The simplest way to reduce the voltage of a DC supply is to use a linear regulator (such as a 7805), but linear regulators waste energy as they operate by dissipating excess power as heat. Buck converters, on the other hand, can be remarkably efficient (95% or higher for integrated circuits), making them useful for tasks such as converting the main voltage in a computer (12V in a desktop, 12-24V in a laptop) down to the 0.8-1.8V needed by the processor.
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