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Module 4 - SNGCE DIGITAL LIBRARY
Module 4 - SNGCE DIGITAL LIBRARY

Power analysis
Power analysis

... In many cases, the determination of the power, and as a result the sources, is still often carried out by analogy with comparable previous installations or even with a certain degree of empiricism (for example value per m² for heating and lighting) which is not accurate enough given the scale of som ...
initial current reduction of synchronous motors with salient poles by
initial current reduction of synchronous motors with salient poles by

PDF
PDF

... This paper proposed methods for the improvement of transconductance in the bulk driven operation amplifier. Here we are using four technologies for the enhancement of transconductance. First modifies the transconductance with the help of active load; second uses a differential pair for the modificat ...
MAX2370 Complete 450MHz Quadrature Transmitter General Description Features
MAX2370 Complete 450MHz Quadrature Transmitter General Description Features

... Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Expo ...
Short Circuit Current Calculations
Short Circuit Current Calculations

... When there are motors in the system, motor short circuit contribution is also a very important factor that must be included in any short-circuit current analysis. When a short circuit occurs, motor contribution adds to the magnitude of the short-circuit current; running motors contribute 4 to 6 time ...
1N4148WS / BAV16WS Features Mechanical Data
1N4148WS / BAV16WS Features Mechanical Data

... written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instruct ...
LT3092 – 200mA 2-Terminal Programmable Current Source
LT3092 – 200mA 2-Terminal Programmable Current Source

... output current up to 200mA. A variety of analog techniques lend themselves to regulating and varying the current source value. The device utilizes a precision “0” TC 10μA reference current source to program output current. This 10μA current source connects to the noninverting input of a power operat ...
Design Challenges in Backlighting LCD TVs
Design Challenges in Backlighting LCD TVs

... for them to lose ionization. If the burst dimming frequency is near a multiple of the vertical sync rate, rolling lines can be created. Again, control of the burst dimming frequency to within a ±5% level will eliminate this problem. Also, in some LCD-TV applications, it is necessary to synchronize t ...
Understanding and using LLC Converters to Great
Understanding and using LLC Converters to Great

... stage. We do not gain by simply shifting the cost and dissipation, from one circuit block to another: the EMI stage in this case. Question 2: The simplest, seemingly most obvious, question can in fact become the hardest to answer: how do we “regulate” the output voltage (of a resonant converter)? Do ...
Piezoelectric Accelerometers
Piezoelectric Accelerometers

24 Bit To 48 Bit Registered Buffer With SSTL_2 Inputs And Outputs
24 Bit To 48 Bit Registered Buffer With SSTL_2 Inputs And Outputs

Technics
Technics

... a ship or other place where DC is used ...
55_Shoan Mbabazi - E
55_Shoan Mbabazi - E

and Dual-Channel Antenna LDO With Current
and Dual-Channel Antenna LDO With Current

... between this pin and GND. In addition, connect a 1-µF capacitor from this pin to GND for frequency compensation of the current-sense loop. Short this pin to GND if not used. Output of current sense for sensing. SENSE1 current is proportional to the current flow through OUT1 and SENSE 2 current is pr ...
Find the Right Fuse!
Find the Right Fuse!

... quick-acting fuse types with different numbers of pulses. ...
Power Converter - CERN Accelerator School
Power Converter - CERN Accelerator School

DESIGN OF A “7490-LIKE” DECADE
DESIGN OF A “7490-LIKE” DECADE

... the (unbuffered) Q output loaded with a 100 fF capacitor. The design target is now FF tPD minimization, otherwise those count states will be “swallowed”. FF resizing for speed optimization should again start at the outputs and progress toward the inputs. In the HSpice output file, it is seen that th ...
OPA693: Ultra-Wideband, Fixed Gain Video Buffer Amplifier with
OPA693: Ultra-Wideband, Fixed Gain Video Buffer Amplifier with

... This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete devi ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331

... The doubly fed induction generator (DFIG) has received much attention in the wind energy conversion. If a wound rotor induction machine (DFIG) is used, it is possible to control the generator by accessing the rotor circuits. A significant advantage in using doubly fed induction generators (DFIG) is ...
Part III: LED conversion - Microscopy-UK
Part III: LED conversion - Microscopy-UK

... repairing or replacing the more sophisticated supplies  for incandescent lights on modern scopes from about 1975 onward, and met the ubiquitous switch mode power supply, or SMPS.  In this segment, we will review the ultimate, and perhaps best, solution for repairing or updating illumination on a cla ...
Hi-Fi AUDIO COMPONENTS 2012 / 2013
Hi-Fi AUDIO COMPONENTS 2012 / 2013

... volume control unit as in high-end models Uses the same large 27 mm volume control unit with motor drive that is used in the PMA-2010AE. The volume control unit can be remotely controlled. ...
III. Over 600 Volts, Nominal 110.30 General
III. Over 600 Volts, Nominal 110.30 General

... or more extension utilizing three or more strands of barbed wire or equivalent. The distance from the fence to live parts shall be not less than given in Table ...
Principles and implementations of electrolysis systems for water
Principles and implementations of electrolysis systems for water

... supports transport of protons between the anode and cathode. SPEs typically are made from perfluorosulfonic acid polymers, such as Nafions, Felmions, Fumapems or Aciplexs. These polymers possess high oxidative stability, high mechanical strength and durability, and exhibit high conductivity for prot ...
Y. Huang, B. Hekmatshoar, S. Wagner, J.C. Sturm, "Static active-matrix OLED display without pixel refresh enabled by amorphous-silicon non-volatile memory," J. Soc. Info. Display 18, pp. 879-883 (2010).
Y. Huang, B. Hekmatshoar, S. Wagner, J.C. Sturm, "Static active-matrix OLED display without pixel refresh enabled by amorphous-silicon non-volatile memory," J. Soc. Info. Display 18, pp. 879-883 (2010).

... threshold voltage even if the power is turned off. To change the programmed image, the pixels are first erased and then programmed again. Erase mode, shown in Fig. 1(c), is identical to the program operation. The only difference is that the applied voltage pulse has a large negative magnitude, inste ...
< 1 ... 665 666 667 668 669 670 671 672 673 ... 1974 >

Mains electricity



Mains electricity is the general-purpose alternating-current (AC) electric power supply. In the US, electric power is referred to by several names including household power, household electricity, house current, powerline, domestic power, wall power, line power, AC power, city power, street power, and grid power.The two principal properties of the electric power supply, voltage and frequency, differ between regions. A voltage of (nominally) 230 V and a frequency of 50 Hz is used in Europe, most of Asia, most of South America and Australia. In North America, the most common combination is 120 V and a frequency of 60 Hz. Other voltages exist, and some countries may have, for example, 230 V but 60 Hz. This is a concern to travelers, since portable appliances designed for one voltage and frequency combination may not operate or may be destroyed by another.The use of different plugs and sockets in different regions provides some protection from accidental use of appliances with incompatible voltage and frequency requirements.
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