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FJPF2145 ESBC Rated NPN Power Transistor ™
FJPF2145 ESBC Rated NPN Power Transistor ™

... High dv/dt Transients ...
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Voltage Regulator TAPCON® 230

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... and bus voltages is seen by the relay as an impedance swing on the R – X plane. If the impedance trajectory enters a relay zone and stays there for sufficiently long time, then the relay will issue a trip decision on power swing. Tripping on power swings is not desirable. We now investigate this phe ...
User Guide pdf (Page 11 - 12)
User Guide pdf (Page 11 - 12)

< 1 ... 822 823 824 825 826 827 828 829 830 ... 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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