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electrical drives
electrical drives

Aalborg Universitet
Aalborg Universitet

revised manuscript 27.8.09
revised manuscript 27.8.09

... The operational mechanism of the ISFET originates from the pH sensitivity of the inorganic gate oxide, such as SiO2, Al2O3, Si3Ni4, or Ta2O5. This mechanism is a surface phenomenon which can be explained by the site binding theory [5]. Surface hydroxyl groups react with the analyte in an acidic or ...
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STGW20NC60VD
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... 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. ...
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Study paper on Lightning and surge protection in Telecom Networks
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Using the ECC HTML Pages
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... The Ranger III Data Logger is an advanced recording, analyzing and reporting system. The Ranger III functions as a paperless recorder, storing data in memory at a rate and recording length you specify. Data transfer to your computer is via serial interface, modem, or portable data pack. Basic system ...
< 1 ... 784 785 786 787 788 789 790 791 792 ... 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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