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LiNi-S
LiNi-S

... undamaged and conductors free from dirt and corrosion. • Control cables should be of a suitable shielded type and not fixed in proximity to high voltage power cables or other sources of electromagnetic interference. • When connecting KKDC products always observe the correct polarity (+/-). Failure ...
General Specification for Digital Protective Relay of MV Switchgear
General Specification for Digital Protective Relay of MV Switchgear

... life time which shall not be less than 15 years in proper temperature and environmental operating conditions. 3.3.10 Any component substitution because of component obsolescence shall not affect the upward compatibility between relays on duty 3.4 Digital Protective Relay installation rules and requi ...
MP1470 - Monolithic Power System
MP1470 - Monolithic Power System

... Under light-load conditions (below 100mA), use a larger inductor to improve efficiency. Selecting the Input Capacitor The input current to the step-down converter is discontinuous, and therefore requires a capacitor to both supply the AC current to the step-down converter and maintain the DC input v ...
Printed passive matrix addressed electrochromic displays Linköping University Post Print
Printed passive matrix addressed electrochromic displays Linköping University Post Print

... AMADs still require a fairly large number of printed layers, thus ruling out simple manufacturing and low cost. In passive matrix addressed displays (PMAD) addressing transistors are not utilized to provide addressability for the display element. In PMAD configuration, the system complexity is then ...
MAX9377/MAX9378 Anything-to-LVPECL/LVDS Translators with Pin-Selectable Divide-by-Four General Description
MAX9377/MAX9378 Anything-to-LVPECL/LVDS Translators with Pin-Selectable Divide-by-Four General Description

... high when powering up the device with SEL high prevents the unknown states with the divider from being propagated to the outputs. If the device is powered up with SEL high but without asserting RST, the outputs are only guaranteed to be 1/4th the input frequency after 2.5 cycles have been applied to ...
MMBD4148SE Datasheet
MMBD4148SE Datasheet

... arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance w ...
TGP2103 数据资料DataSheet下载
TGP2103 数据资料DataSheet下载

... Control Supply Current ...
RTD Theory
RTD Theory

... susceptible to self-heating so 1 mA should not be exceeded. Wire wound RTD’s can dissipate more heat so they can withstand more than 1 mA. The larger the sheath or the more insulation there is the better chance there will be an error caused by self heating. ...
Document
Document

... A circuit breaker is an overcurrent protective device that does not need to be replaced each time the circuit current rating is exceeded. Circuit breakers may be thermally or magnetically operated. ...
PDF
PDF

... Predictive control algorithm uses the finite number of valid switching states of the power converters. The proposed scheme maintains the predictive values closed to their respective references at the end of the sampling instant and maintain positive DC-link voltage between the rectifier and inverter ...
Carbon brushes for fractional and subfractional horsepower motors
Carbon brushes for fractional and subfractional horsepower motors

DMMS 300+ - Electro Industries
DMMS 300+ - Electro Industries

... current transformers and 120 volt secondary potential transformers). The monitor shall accept a voltage monitoring range of up to 600 volts, phase to phase. 1. The Monitor shall withstand 200% rated current continuously. It shall withstand 10X rated current for at least 3 seconds. 2. The Monitor sha ...
Archived Lab Manual (English/Spanish PDF)
Archived Lab Manual (English/Spanish PDF)

... 4. Referring to the chart in question 1, which configuration of charges takes the most energy to create, starting from neutral materials? The more charges are moved, the more energy is required; therefore, the last configuration where two electrons have been moved takes the most energy to create. 5. ...
May 2003 Ray Marston - Understanding And Using OTA OP
May 2003 Ray Marston - Understanding And Using OTA OP

... E/I, the circuit’s Rx terminal acts like Figure 14. Voltage-controlled resistor Figure 13. Voltage-controlled resistor, variable with linearizing diodes. from 10k to 10M via Ibias.. an AC resistor with a value determined by Ibias. As the frequency increases, however, the impedance (X) of The effecti ...
PDF - Sidhant Gupta
PDF - Sidhant Gupta

Power Reduction Techniques Used in SPARC64 VIIIfx
Power Reduction Techniques Used in SPARC64 VIIIfx

MAX2181A FM Automotive Low-Noise Amplifier General Description Features
MAX2181A FM Automotive Low-Noise Amplifier General Description Features

... Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. CAUTION! ESD SENSITIVE DEVICE Stresses beyond those ...
Shaft Grounding and Sliding Electrical Contacts
Shaft Grounding and Sliding Electrical Contacts

... have been the many types of motors and generators that require power to the rotating part. The electrical and magnetic circuits in these machines inherently create a high potential for static and induced voltages. As the power capacities of these machines increased over the years the tendency for ac ...
Presentation kit - UCSD VLSI CAD Laboratory
Presentation kit - UCSD VLSI CAD Laboratory

...  Experimental Setups and Results ...
Technical Manual
Technical Manual

HydroKinetic_ME438_Final v2.4
HydroKinetic_ME438_Final v2.4

... disadvantage of such systems [1], yet in certain cases such as off the grid remote locations, construction sites, and emergency energy supplies a demand of such systems could meet the cost. In addition a mass production and improved designs could significantly lower costs potentially making it a via ...
View/Open - Naval Postgraduate School
View/Open - Naval Postgraduate School

ZG310 u en 500729 - Avery Weigh
ZG310 u en 500729 - Avery Weigh

... Cautions give information about procedures that, if not observed, could result in damage to equipment or corruption to and loss of data. ...
affolder-serialpower
affolder-serialpower

MAX2021EVKIT.pdf
MAX2021EVKIT.pdf

... heat from the device and provides a low-impedance electrical connection to the ground plane. The EP must be attached to the PCB ground plane with a low thermal and electrical impedance contact. Ideally, this is achieved by soldering the backside of the package directly to a top metal ground plane on ...
< 1 ... 549 550 551 552 553 554 555 556 557 ... 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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