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DP-300 Current Differential Protection Relay
DP-300 Current Differential Protection Relay

Programmable photonic crystal nanobeam cavities
Programmable photonic crystal nanobeam cavities

... matched very well with the theoretical predictions. The slight discrepancy can be attributed to several effects, including the uncertainty in the refractive index of the doped silicon device layer, variations in the layer thickness, and uncertainty in the amount of tensile stress in the device layer ...
Pole Mounted Distribution Transformer
Pole Mounted Distribution Transformer

FPF2300/02/03 Dual-Output Current Limit Switch
FPF2300/02/03 Dual-Output Current Limit Switch

... lockout), and thermal shutdown protection per each switch. In the event of an over-current condition, the load switch limits the load to current limit value. The minimum current limit is set to 1100mA. ...
III. operational transconductance apmlifire (ota) design
III. operational transconductance apmlifire (ota) design

... C. Wide range amplifires A simple transconductance amplifire will not generate output voltage below Vmin, which , in turn , is dependent on ...
Battery Chargers • Inverters • DC Converters • Power
Battery Chargers • Inverters • DC Converters • Power

... module, the system continues to operate, thus is considered “fault tolerant”. The system consists of a wall mount case which serves as connection point to AC input and battery output, (3 bank) and contains three front-facing power bays, each accommodating a 22.5 amp charger module which slides and l ...
ZXBM1021 Description Pin Assignments
ZXBM1021 Description Pin Assignments

... discharged at every Hall signal change. CLCK pin provides the timing for the Locked Rotor monitor. In normal operation, and after the soft-start period, Lock Detect is enabled. If the Hall signal does not change (i.e. a rotor lock condition) within the Lock Detect time (T LCKDET), the outputs are di ...
Fault Identification and Islanding in DC Grid Connected PV System
Fault Identification and Islanding in DC Grid Connected PV System

... cabling, the bridging fault will occur. Insulation failure of cables such as an animal chewing through cable insulation, mechanical damage, water ingress or corrosion cause these faults. 3) Open Circuit Fault An open circuit fault occurs, when one of the current-carrying paths in series with the loa ...
February 25, 2008
February 25, 2008

... proper equipment at the point of common coupling is a requirement to ensure the seamless transitions between islanding and being connected. Miscues could create phase and frequency issues on the larger grid. Also, power quality and voltage control issues in the microgrid may affect the larger grid. ...
XC2301 Series:DATA SHEET
XC2301 Series:DATA SHEET

... before use, to confirm that the information in this datasheet is up to date. 2. We assume no responsibility for any infringement of patents, patent rights, or other rights arising from the use of any information and circuitry in this datasheet. 3. Please ensure suitable shipping controls (including ...
AD7741/AD7742 Data Sheet
AD7741/AD7742 Data Sheet

... Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to abso ...
Battery Drain Analysis Improves Mobile-Device Operating
Battery Drain Analysis Improves Mobile-Device Operating

Analog Devices Welcomes Hittite Microwave Corporation
Analog Devices Welcomes Hittite Microwave Corporation

LT8609/LT8609A/LT8609B - 42V, 2A/3A Peak
LT8609/LT8609A/LT8609B - 42V, 2A/3A Peak

... an external clock, or spread spectrum modulation for low EMI operation. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program VIN UV ...
SIEMENS POWER SYSTEM SIMULATION FOR ENGINEERS® (PSS/E)  LAB3
SIEMENS POWER SYSTEM SIMULATION FOR ENGINEERS® (PSS/E) LAB3

... first line. Then, the line comments inform which branches to monitor in the subsystem named “central”. Finally, the line tells that the monitor file is tied to “central” subsystem. area1.con file: The “area1.con” is another file that is dependent on the subsystem. This file is utilized to simulate c ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)

... transmitted to the base station by the sensors, they form a star topology. Multi-hop communication is the most common case for sensor networks. These sensor nodes form some other topology such as cluster tree network and mesh topology. Zigbee based WSN technology of low data rate, low power consumpt ...
Find any items around your house that are magnetic. Design a table
Find any items around your house that are magnetic. Design a table

Aalborg Universitet Management Strategies
Aalborg Universitet Management Strategies

SL1000 High-Speed Data Acquisition Unit IM 720120-01E 1st Edition
SL1000 High-Speed Data Acquisition Unit IM 720120-01E 1st Edition

... procedures and lists the handling precautions of the SL1000. To ensure correct use, please read this manual thoroughly before beginning operation. Keep this manual in a safe place for quick reference in the event a question arises. This manual will come in handy when you are unsure of how to operate ...
Multilingual Collaboration in SharePoint 2013
Multilingual Collaboration in SharePoint 2013

... A bridge circuit works at a frequency of 2 KHz. The following can be used as detectors for detection of null conditions in the bridge [05D01] a. headphones and vibration galvanometer b. headphones and tunable amplifiers c. vibration galvanometers and tunable amplifier d. tunable amplifiers and vibra ...
Keywords: simulation, short
Keywords: simulation, short

... method are particularly significant in cases when it is necessary to simulate the behaviour of objects in various boundary modes of operation which cannot be induced during laboratory measurement on a physical model as it could be damaging (for example shortcircuit or overloading). The method of mat ...
Hierarchical Control and an Overview of the Control and
Hierarchical Control and an Overview of the Control and

AXAS-A - Ketek
AXAS-A - Ketek

... frequency, is dependant on the operating temperature. The incoming photons generate short current pulses, with a certain rise time (dependant on the location of interaction of the x-ray with the SDD chip), and a certain duration and amplitude (dependent on the energy of the incoming photon). In turn ...
Current Draft
Current Draft

... how much power is being used. Given the option to read the external meter, a homeowner would not know the breakdown of why the amount of power consumed is where it is. That is where the design of this project tries to take over. Using an array of micro-controllers with a centralized unit can give t ...
DATA  SHEET BC847BV NPN general purpose double transistor
DATA SHEET BC847BV NPN general purpose double transistor

< 1 ... 546 547 548 549 550 551 552 553 554 ... 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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