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SN74F21 数据资料 dataSheet 下载
SN74F21 数据资料 dataSheet 下载

... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
LCM600 Series - Artesyn Embedded Technologies
LCM600 Series - Artesyn Embedded Technologies

... voltage is further trimmed down to -20% of the nominal, the same max output load applies. On the other hand, increasing the output voltage to +20% of the nominal should decrease output load accordingly to meet 600W output power. Note 3 - The maximum continuous average output power from this power su ...
CONSTRUCTION AND MAINTENANCE OF HIGH VOLTAGE POWER TRANSFORMERS  STAMATIOS VLACHOS
CONSTRUCTION AND MAINTENANCE OF HIGH VOLTAGE POWER TRANSFORMERS STAMATIOS VLACHOS

... Transformers for use at power or audio frequencies typically have cores made of high permeability silicon steel. The steel has a permeability many times that of free space, and the core thus serves to greatly reduce the magnetizing current, and confine the flux to a path which closely couples the wi ...
ZXGD3005E6 N
ZXGD3005E6 N

... Independent control of rise and fall time An application may require the turn-on (ton) and turn-off (toff) time to be independently controlled, which can be achieved by setting different RSOURCE and RSINK values. With asymmetric RSOURCE and RSINK resistors, then a potential difference will occur bet ...
Example Temperature Measurement Applications Using the
Example Temperature Measurement Applications Using the

... www.ti.com ...
Protective Relays - ElectricalManuals.net
Protective Relays - ElectricalManuals.net

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Type HVH Horizontal/Vertical Unit Heater

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DC Arc Flash Working Group

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construction plans for the lens proton linac
construction plans for the lens proton linac

... New RFQ and 75 keV, 100 mA proton injector ...
Direct Torque Control of Permanent Magnet Synchronous Motor
Direct Torque Control of Permanent Magnet Synchronous Motor

... Abstract— Due to the features such as high efficiency and high power density Permanent Magnet Synchronous Motors (PMSM) are becoming attractive. In high performance servo applications a rapid and accurate torque control is desired preferably without the use of motion state sensor. The use of PMSM co ...
USB cable schematic pinout
USB cable schematic pinout

SKY77176 数据资料DataSheet下载
SKY77176 数据资料DataSheet下载

... 50-ohm load is realized off-chip and within the module package to optimize efficiency and power performance. The SKY77176 AutoSmart™ PAM is manufactured with Skyworks’ GaAs Heterojunction Bipolar Transistor (HBT) process that provides for all positive voltage DC supply operation while maintaining hi ...
CoolRunner-II Automotive CPLD Product Family
CoolRunner-II Automotive CPLD Product Family

... The patented DataGATE technology was developed to permit a straightforward approach to additional power reduction. Each I/O pin has a series switch that can block the arrival of free running signals that are not of interest. Signals that serve no use may increase power consumption, and can be disabl ...
User Manual - Far West Technology, Inc.
User Manual - Far West Technology, Inc.

... The microprocessor takes two actions. The first is to generate a charge pulse to offset the input current. It uses the information from the first comparator, U1:A for this. When the output of the electrometer goes below ground U1:A goes from high to low and the microprocessor generates a charge puls ...
Aalborg Universitet Liu, Yan
Aalborg Universitet Liu, Yan

Universal Chilling Systems, LLC.
Universal Chilling Systems, LLC.

... B. After the unit and auxiliary facility are fixed, the water lines need to be processed for pipe cleaning, pressure test, air discharge, trial running of chilled water system etc. The unit commissioning and trial running can be started after confirmation of all is normal. C. Operation of the unit a ...
Redalyc.Fuzzy control techniques applied to a three phase
Redalyc.Fuzzy control techniques applied to a three phase

High-Brightness, High-Current-Density Cathode for Induction Linac
High-Brightness, High-Current-Density Cathode for Induction Linac

... 106 kV and the space charge limited current 436 A. The images of the individual holes are well separated, and there is no apparent elongation in the radial direction from energy variations since the camera gate pulse is short (5 ns) and timed to OCCUT at peak voltage, where variation in beam energy ...
A) Passive transducer
A) Passive transducer

... 3. Used as one part of an AC bridge circuit to produce an AC output signal ...
Datasheet - Texas Instruments
Datasheet - Texas Instruments

... All part numbers of the LM75 will operate properly over the +VS supply voltage range of 3 V to 5.5 V. The devices are tested and specified for rated accuracy at their nominal supply voltage. Accuracy will typically degrade 1°C/V of variation in +VS as it varies from the nominal value. For best accur ...
ARCAT spec 262600 2009-9-15
ARCAT spec 262600 2009-9-15

... UL – 347A Medium Voltage Power Conversion Equipment Preliminary Standard CSA – C22.2 No. 274-13 Adjustable Speed Drives ANSI – Instrument Transformers C57.13 ...
AN1813
AN1813

... not be used by other application devices, even if an ICC session is not in progress. If the application uses these pins as inputs, isolation such as a serial resistor must be implemented to prevent other application devices from forcing a signal on either of these pins. The application board must no ...
Broadband Catalog 2012
Broadband Catalog 2012

... today’s cable networks. The XM2-HP features a high efficiency transformer with lower power consumption and lower life cycle costs. This “green” power supply can greatly reduce the carbon footprint of the entire cable plant by running more efficiently 24/7. Additional features include an enhanced Sma ...
Datasheet
Datasheet

... The device crystal connections should include pads for small capacitors from X1 to ground and from X2 to ground. These capacitors are used to adjust the stray capacitance of the board to match the nominally required crystal load capacitance. Because load capacitance can only be increased in this tri ...
Circuit Breaker
Circuit Breaker

... o Residual-current device (RCD, formerly known as a residual current circuit breaker) — detects current imbalance, but does not provide over-current protection. o Residual current breaker with over-current protection (RCBO) — combines the functions of an RCD and an MCB in one package. In the United ...
< 1 ... 332 333 334 335 336 337 338 339 340 ... 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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