A power supply is a device that supplies electrical energy to one or more electric loads. In most cases, the power supply controls the output voltage or current to a specific value. This specific value of output voltage or current is held nearly constant despite (small) variations in either the load or the supply.
From the design and construction point of view, power supplies for electronic devices can be broadly divided into linear and switching power supplies. A linear supply is usually a relatively simple design, but relatively bulky, heavy, and less efficient because of the large mains-frequency transformers and heat-sinked. A switched-mode supply of the same rating will be smaller, is usually more efficient, but will be more complex.
From application point of view, most ommercially available power supplies fall into the following categories:
- Battery
- DC power supply
- Programmable power supply
- Uninterruptible power supply
- High-voltage power supply
- Voltage multipliers
A well desgined power supply should include overload protection mechanism such as
- Fuses
- Circuit breakers
- Thermal cutouts
- Current limiting
38 companies matched
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50Hz 60Hz Converter Inc
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9 To 5 Computer Supply Distrs
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A & A Computers, Inc.
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A2Z Computers, Inc.
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AA Electric
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AC Frequency Converter 50Hz 60Hz 400Hz
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AC Power Technology, Inc.
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Active Electrical Supply Company
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Active Power, Inc.
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American Appliance Repair Service
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American Power Conversion Corp. - APC
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Bosch (Xiamen) New Energy Co., Ltd.
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Cell-Con, Inc
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Chroma ATE, Inc.
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Eaton Corporation - Powerware
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Emerson Network Power - Embedded Power
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GC Electronics
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Georator Corp.
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Golden Knitted Wire Mesh Factory
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High Voltage Power Solutions, Inc.
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Hitec Power Protection, Inc.
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Intersil Corporation
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Liebert Corporation/Emerson Network Power
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Marshall E. Campbell Co.
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PEACO Support Inc
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PowerContinuity Systems
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Rahul Scientific Industries
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Reign Power Co., Ltd
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Reynolds Industries, Inc.
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Sensitron Semiconductor
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Sola/Hevi-Duty
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Solid State Devices, Inc.
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Storage Battery Systems, Inc.
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Transtector Systems, Inc.
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VFD Manufacturers
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Voltage Multipliers, Inc.
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Waldom Electronics
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Yoen Electronic Co., Ltd.
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