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98 Series Brochure
98 Series Brochure

... switch allows the unit to set its own sensitivity without a meter. DIP switches provide complete on-board programmability without the use of an external programming device. Each receiver is programmable for frequency, bandwidth/baud rate, and operation. Operational modes include two or three frequen ...
Cells, Modules and Arrays
Cells, Modules and Arrays

...  The photovoltaic effect is the process of creating a voltage across charged materials that are exposed to electromagnetic radiation.  Photons in sunlight impart their energy to excess charge carriers (electrons and holes) allowing them to freely move about the material.  Charge opposition betwee ...
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... Electrostatic discharge (ESD) damages equipment and impairs electrical circuitry. ESD occurs when printed circuit boards are improperly handled and results in complete or intermittent failures. The I/O controller, network processing engine, cable modem cards, and port adapters consist of a printed c ...
Effects of Measurements and Pseudo
Effects of Measurements and Pseudo

... distribution systems, considering correlation. In [12], the correlation between loads has been considered in a probabilistic power flow, that uses the real measurements as constraints. In [13], the correlation among different measurements provided by a specific power meter device is used and it is s ...
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Safety precautions 1

LCD (Liquid Crystal Display) Color Monitor Introduction
LCD (Liquid Crystal Display) Color Monitor Introduction

... Natural light travels in waves that are oriented at random angles. This is why an object has the same color and brightness when viewed from different angles (unless it has a shadow or other lighting differences). A polarizing filter is simply a set of extremely closely spaced parallel lines. These l ...
Digital Systems Topic 2:  Logic Gates and Families: Definitions and Characteristics
Digital Systems Topic 2: Logic Gates and Families: Definitions and Characteristics

... • In CMOS circuits, at least one of the transistors in a pair is off, preventing current flow, and reduces power significantly (as compared to TTL) – Current flows in CMOS circuits only as the inputs/outputs are changing ...
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... The components may ONLY cabled with the mains disconnected. The cabling may only be carried out by trained expert personnel. Important before commissioning: ...
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... In this case the peak voltage of the battery drops more quickly than normal as it is used, even though the total energy remains almost the same. In modern electronic equipment that monitors the voltage to indicate battery charge, the battery appears to be draining very quickly and therefore about to ...
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HARDWARE MANUAL 4K242, 4K1042, 4K1142

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... In EDM, as has been discussed earlier, material removal mainly occurs due to thermal evaporation and melting. As thermal processing is required to be carried out in absence of oxygen so that the process can be controlled and oxidation avoided. Oxidation often leads to poor surface conductivity (elec ...
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Grid Tied Inverter 1,5 / 3 / 5 kW User Manual

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International Electrical Engineering Journal (IEEJ) Vol. 5 (2014) No.11, pp. 1632-1638

... updating factor, whose value is derived from fuzzy logic, with the plant error and error change ratio as input variables. The result shows the effective control rule reduction of the proposed methods which can be carried out on a four-phase 8/6 pole SRM are given to show the very good stability and ...
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SN74AHCT1G08 数据资料 dataSheet 下载

... Package thermal impedance, θJA (see Note 2): DBV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206°C/W DCK package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252°C/W DRL package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142°C/W Storage t ...
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... The module measures the following electrical quantities: Vrms, Irms, Watt, Var, Va, Frequenza, Cos and Active Energy, and provides the values in the corresponding MODBUS registers. In three-phase environments, measurements given above corresponding to any phase are available, other than the three-p ...
owner`s manual fleet power inverter/battery
owner`s manual fleet power inverter/battery

... natural result of charging and will experience some water loss. It is very important that the electrolyte level be checked frequently and topped off with distilled water when necessary. Never allow the tops of the plates to be exposed to air, as contamination of the cell will result. Keeping the top ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

... A fuse is one type of over current device that is designed to be a sacrificial element in an electrical power system. [1] Fuses are designed to open circuits when excessive currents are present due to overloads or faults and to prevent further damage to the system that might result if the fuse were ...
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... The VC7936 Fail Safe Modulating Control Valve provides proportional control of hot or chilled water in commercial heating and cooling applications, such as unit ventilators. On a power failure, this patented actuator design drives the valve to the fail safe position, either fully open or closed, acc ...
v series ii powered subwoofers
v series ii powered subwoofers

... If an indoor antenna is used (either built into the set or installed separately), never allow any part of the antenna to touch the metal parts of other electrical appliances such as a lamp, TV set etc. ...
Vip Energy_User Manual Eng.FH11 - elcontrol
Vip Energy_User Manual Eng.FH11 - elcontrol

... Before making any connections the instrument must be grounded. 1.6.2 Power supply voltage The instrument can take a power supply voltage with range 100/120V-50/60 Hz or 200/240V-50/60Hz. Versions for 24VDC power supply are also available. IMPORTANT As the instrument is not fitted with a fuse on the ...
Extended AM1000/500 Installation Manual
Extended AM1000/500 Installation Manual

... turning the transmitter audio gain down a bit, you may need to turn it down to almost off if you are getting to much drive from the 222. Adjust 222 output level and Transmitter level for good sound from a test radio. Be careful about having a radio to close to the transmitter, it can be overloaded. ...
DMN4026SSD Product Summary Features
DMN4026SSD Product Summary Features

... 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 ...
UPCommons
UPCommons

< 1 ... 279 280 281 282 283 284 285 286 287 ... 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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