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A power supply is an electrical device that supplies electric power to an electrical load. The main purpose of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load. As a result, power supplies are sometimes referred to as electric power converters. Some power supplies are ...
It is common for a hardware store in the US to repair broken windows and screens, repair power equipment such as lawn mowers, re-key entry locks, make copies of house keys and car keys, re-wire lamps and vacuum cleaners, sharpen knives and cutting tools, make minor repairs to faucet and shower parts, repair kerosene heaters and cut and thread ...
HD Supply Holdings, Inc. (formerly Maintenance Warehouse) is an industrial distributor in North America.The company provides a broad range of products and value-added services to approximately 250,000 professional customers in maintenance, repair and operations, infrastructure and power and specialty construction sectors. [4]
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In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. The switched-mode power supply's higher electrical efficiency is an important advantage. Switched-mode power supplies can also be substantially smaller and lighter than a linear supply because the transformer can be much smaller.
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A switched-mode power supply operating at the current limit with the output short-circuited does not have increased power dissipation in the power transistor(s), so foldback current limiting is an application feature only rather than one that also prevents a load fault from also destroying the power supply. The safety benefit of reducing the ...
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