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Evaluation of Magnetic Materials for Very High Frequency Power
Evaluation of Magnetic Materials for Very High Frequency Power

ZXTP2014G Features Mechanical Data
ZXTP2014G Features Mechanical Data

... 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 ...
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investigation of numerical technique to evaluate frequency response
investigation of numerical technique to evaluate frequency response

... Now, one of the methods which are becoming an increasingly important condition monitoring tool is the Frequency Response Analysis (FRA) technique. This method involves measuring the transfer function of the transformer windings as a function of frequency. Any disruption of the winding arrangement wi ...
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Harmonic Filter Bank Tuning - Northeast Power Systems, Inc.
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... then a de-tuned filter bank is the best choice. This filter will do little for removing any harmonic distortion present on the system but will allow the installation of a large capacitor bank without any adverse system interactions. De-tuned filter banks are less costly an are more reliable than par ...
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FireForce 8 - Honeywell Power Products

... A fire alarm system will not operate without any electrical power. If AC power fails, the system will operate from standby batteries only for a specified time and only if the batteries have been properly maintained and replaced regularly. Equipment used in the system may not be technically compatibl ...
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Electric Motor Brake Horsepower Calculations

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... of these emergency loads are large induction motors. At full voltage, this type of motor draws a starting current of five to eight times its rated full-load current. These sudden large increases in current drawn from the diesel generator as a result of the startup of induction motors can result in s ...
STGW25H120DF2
STGW25H120DF2

... Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ...
< 1 ... 273 274 275 276 277 278 279 280 281 ... 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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