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415v distribution for green data centers
415v distribution for green data centers

... using unique autotransformers. The computer equipment will operate more efficiently at the higher voltage and the autotransformers will have substantially lower losses than the isolation transformers that are typically used. In addition to the improved operating efficiencies, 415V distribution can p ...
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Powerbox Mk2 - Regulated stompbox power supply
Powerbox Mk2 - Regulated stompbox power supply

... In history of guitar effects there is a small group of effects, which work with negative voltage (positive ground) because of their specification. Most often minus 9 volts (-9VDC). The most of them work only with batteries because of safety reasons, but there is some with power connector for out pow ...
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S.T.A.R. Faulted Circuit Indicators
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... have some issues on the quality of supplied voltage and it has current harmonics in the systems. They also have negative effects on power system equipments and customers. Due to the usage of capacitive and inductive load, the reactive power is generated; it means the reactive power is produced when ...
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Turn in for this unit
Turn in for this unit

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AC adapter



An AC adapter, AC/DC adapter, or AC/DC converter is a type of external power supply, often enclosed in a case similar to an AC plug. Other common names include plug pack, plug-in adapter, adapter block, domestic mains adapter, line power adapter, wall wart, power brick, and power adapter. Adapters for battery-powered equipment may be described as chargers or rechargers (see also battery charger).AC adapters are used with electrical devices that require power but do not contain internal components to derive the required voltage and power from mains power. The internal circuitry of an external power supply is very similar to the design that would be used for a built-in or internal supply.External power supplies are used both with equipment with no other source of power and with battery-powered equipment, where the supply, when plugged in, can sometimes charge the battery in addition to powering the equipment.Use of an external power supply allows portability of equipment powered either by mains or battery without the added bulk of internal power components, and makes it unnecessary to produce equipment for use only with a specified power source; the same device can be powered from 120VAC or 230VAC mains, vehicle or aircraft battery by using a different adapter.
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