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eet 3086 switchgear and protection
eet 3086 switchgear and protection

... secondaries are also equal (Isin = Isout) because the current transformers are identical. When the current transformers are connected with the polarities indicated in Figure 1, the secondary currents flow round the circuit and no current flows in the coil of the protective relay (IR = 0), which can ...
Intel® Galileo Gen 1 Development Board: Datasheet
Intel® Galileo Gen 1 Development Board: Datasheet

... Galileo provides UART TTL (5V/3.3V) serial communication, which is available on digital pin 0 (RX) and 1 (TX). In addition, a second UART provides RS-232 support and is connected via a 3.5mm jack. The USB Client ports allows for serial (CDC-ACM) communications over USB. This provides a serial connec ...
Catalog - All Pages | Nexxus Lighting
Catalog - All Pages | Nexxus Lighting

... Next and Previous keys (+/-). This product was developed to allow end users to have instant access to pre-assigned scenes, each scene having a limit of 1000 different steps.In addition to the eight assigned scenes, there are 247 other scenes available for playback. These then are accessible through ...
Unit 2 - GVPCEW
Unit 2 - GVPCEW

... moving structure by fixing four metallic wires in such a way, so that two are in compression and two are in tension, as shown in fig. 6 (a). On the other hand, in the bonded strain gage, the element is fixed on a backing material, which is permanently fixed over a structure, whose strain has to be m ...
Chapter 8 Table of Contents Section Title Page
Chapter 8 Table of Contents Section Title Page

... necessary ongoing analysis to ensure the preferred offsite power source remains capable of supporting plant startup, and the ability to shut down the plant under normal and emergency conditions. The agreement will identify the transmission line and substation equipment that is considered for review ...
Eco-mode: Benefits and Risks of Energy-saving Modes
Eco-mode: Benefits and Risks of Energy-saving Modes

Power-Gating Single-Rail MOS Current
Power-Gating Single-Rail MOS Current

... function blocks or modules in a system are in active mode, the leakage dissipations of conventional CMOS circuits in sleep mode can effectively reduce by introducing multithreshold CMOS (MTCMOS) power-gating technologies. In conventional CMOS circuits, power-gating circuit uses usually high-threshol ...
(no dtcs): check the fan control primary circuits
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µPMICs for Multimedia Application Processors in a 3.0mm x 2.5mm WLP MAX8893A/MAX8893B/MAX8893C
µPMICs for Multimedia Application Processors in a 3.0mm x 2.5mm WLP MAX8893A/MAX8893B/MAX8893C

... Note 1: LX has internal clap diodes to PGND and IN1. Applications that forward bias these diodes should take care not to exceed the IC’s package-dissipation limits. Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer boar ...
Installation Manual - Schneider Electric
Installation Manual - Schneider Electric

... avoid hazards involved are authorized to work on and with this drive system. Installation, adjustment, repair and maintenance must be performed by qualified personnel. The system integrator is responsible for compliance with all local and national electrical code requirements as well as all other ap ...
LMH2120 6 GHz Linear RMS Power Detector with 40 dB Dynamic
LMH2120 6 GHz Linear RMS Power Detector with 40 dB Dynamic

... supply insensitive, output voltage that relates linearly to the RF input power in volt. The LMH2120's excellent conformance to a linear response enables an easy integration by using slope and intercept only, reducing calibration effort significantly. The device operates with a single supply from 2.7 ...
1966 , Volume v.17 n.9 , Issue May-1966
1966 , Volume v.17 n.9 , Issue May-1966

... troduced by the sample-and-hold system does not appear in the IF signals until the 50th harmonic, which is usually much higher than the highest significant harmonic in the input signal. ...
Submersible Wastewater Pump Type ABS AS 0530 - 0841
Submersible Wastewater Pump Type ABS AS 0530 - 0841



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Platforma mini robota edukacyjnego AMRobot - eCube
Platforma mini robota edukacyjnego AMRobot - eCube

... charge the battery. The manufacturer of Eneloop type battery declares its endurance as 1800 charge cycles. The user can also employ other types of battery (NiMH battery with nominal voltage of 7.2V that is, 1.2V per single cell after disassembling the battery container). The battery capacity should ...
MCS2000-DRV2 Dual Voltage - industrial magza distribuidor de
MCS2000-DRV2 Dual Voltage - industrial magza distribuidor de

... make troubleshooting and monitoring operation much simpler than previous versions. A combination red and green LED for each channel determines operation during normal run conditions as well as during faults. ...
mic+35/DD/TC
mic+35/DD/TC

... In the add-on-menu of TouchControl, the user can, however, also pre-set the sensor to current or voltage output. In this  menu, the measuring value output on the LED display with analogue sensors can additionally be changed to percentage  indication. The window limits of the analogue characteristic  ...
from itu.edu.tr
from itu.edu.tr

... TMS 0.35µm CMOS process model are included to verify the theory. Furthermore, a design example of a fourth order video band filter is given to illustrate the possibilities in analog circuit design provided by the topology introduced. Keywords: Electronically tunable, Current Conveyor, Transfer funct ...
Aalborg Universitet
Aalborg Universitet

Instructions for use and maintenance
Instructions for use and maintenance

Switched Capacitor DC-DC Converters: Topologies and Applications
Switched Capacitor DC-DC Converters: Topologies and Applications

III. Analysis of Harmonic Loss - Massachusetts Institute of Technology
III. Analysis of Harmonic Loss - Massachusetts Institute of Technology

... the emotional component of the system (for example, line, reactance of transformer), at a certain frequency, the resonant conditions may exist in series or in parallel for such combination. When harmonic in the system is large enough, dangerous over-voltage or over-current of harmonic would be cause ...
Preliminary
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... operating supply voltage range. Typical input bias current is 0.15 pA to minimize offset errors caused by the bias current flowing through the high output impedance (~1 GΩ) of the pH sensor. The offset voltage of the ADA4661-2 is only 150 µV. Soil properties are determined by a number of parameters. ...
flextec™450 - Red-D
flextec™450 - Red-D

... Electric for advice or information about their use of our products. We respond to our customers based on the best information in our possession at that time. Lincoln Electric is not in a position to warrant or guarantee such advice, and assumes no liability, with respect to such information or advic ...
< 1 ... 495 496 497 498 499 500 501 502 503 ... 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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