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Power supplies are devices that produce AC or DC power.  This grouping includes current sources, DC power supplies, AC-DC adapters, DC-DC converters, AC power sources, and DC-AC inverters. Current sources provide reliable current for electrical component testing and for powering specialized components.  DC power supplies accept AC input and provide one or more DC outputs for a wide variety of computer and industrial applications.  AC / DC adapters accept AC input voltage directly from a wall outlet, and output DC voltage. DC-DC converters accept DC input and provide regulated DC outputs for computers, telecommunications, and process control applications. AC power sources provide alternating power and will typically have adjustable output values for the testing of component response at various voltage, current and frequency levels. DC to AC power inverters are used for converting direct current (DC) into alternating current (AC). They are also known as DC to AC converters.  Rectifiers accept AC input and provide one or more DC outputs for a wide variety of computer and industrial applications.  Style, output, display, application, and features are all important to consider when specifying power supplies.

Choices for power supply style include ATX, board, cabinet, desktop, DIN rail, module, open frame, enclosed, PCB mount, rack mount and wall mount.  Important output specifications to consider include number of outputs, DC output voltage, DC output power, AC output voltage, AC output frequency and apparent power.  Common choices for DC output voltage include 3.3 V, 5 V, 12 V, 15 V, 24 V, and 48 V.  The DC output power is the output power of the device.  Power supplies can also have an AC output voltage as well as AC output frequency.  Apparent power is the product of the RMS current and the RMS voltage of the AC output, it is identical to the VA rating.


Products & Services Related to Power Supplies
AC-DC Adapters
AC-DC adapters accept AC input voltage directly from a wall outlet, and output DC voltage.
Current Sources
Current sources provide reliable current for electrical component testing and for powering specialized components.
DC Power Systems
DC power systems provide continuous DC power through multiple outputs.  Most DC power systems include a battery backup, temperature compensation, and other features.
High Voltage Power Supplies
High voltage power supplies use linear technology to provide one or more DC outputs at voltage levels of hundreds or thousands of volts.
Medical Power Supplies
Medical power supplies produce conditioned outputs for medical devices, instruments, and equipment.
Power Rectifiers
Power rectifiers are electrical devices that convert alternating current (AC) to direct current (DC). They are an integral part of telecom rectifiers for the telecommunications industry, and in battery chargers, DC power systems, and other power system devices.
Programmable Power Supplies
Programmable power supplies are digitally controlled power sources that provide accurate and adjustable levels of voltage, current, and frequency. They include a processor, voltage/current programming circuits, current shunt, and voltage/current read-back circuits.

Other Topics You Might Be Interested In
Board-mounted PCB components may use THT or SMT technologies. Through hole technology (THT) mounts components on a printed circuit board (PCB) by inserting component leads through holes in the board... (Read More)
The design of AC/DC power supplies is inevitably evolutionary, rather than revolutionary. It develops largely as a result of gradual improvements in semiconductors and passive component technologies... (Read More)
Power supplies are used to convert AC voltages like 120 VAC to various DC voltages like 3.3 V, 5 V, 12 V, 24 V, 48 V etc. Majority of modern day electronic devices use embedded general purpose Switch... (Read More)

Engineering Web: Power Supplies
Pages: 1 - 5 of 15116970
Acopian Power Supplies - AC-DC Power Supplies, DC-DC Power Supplies, DC DC ...
NEMA 4X Enclosed Power Supplies. *UL508 Power Supply models. *Linear Power Supplies. *Switching Power Supplies. *Unregulated Power Supplies. *Find Power Supply by Voltage. *Find Power Supply by Model ...
See Acopian Profile & Catalog
Howstuffworks "How PC Power Supplies Work"
Introduction to How PC Power Supplies Work. ›.  . Switcher Technology. ›.  . Power Supply Standardization. ›.  . Power Supply Wattage. ›.  . Power Supply Problems. ›.  . Power Supply Improvements. ›. ...
Computer Power Supplies - ATX Power Supplies
... Power Supplies. *Bestec Power Supplies. *Compaq Power Supplies. *Dell Power Supplies. *Delta Power Supplies. *Emachine Power Supplies. *FSP Power Supplies. *Gateway Power Supplies. *HP Power Supplies ...
Power Supply Manufacturer database
... SUPPLY, AC/DC Converter SMPS, POWER SUPPLY, POWER SUPPLIES Total Po . SFS5-12 . SFS5-12 . AC/DC.  . SFS5-12 (AC/DC Converter) SMPS, POWER SUPPLY, AC/DC Converter SMPS, POWER SUPPLY, POWER SUPPLIES ...
transformer manufacturers, power supplies, magnetic components - Foster-...
Recognized as one of the world's most respected transformer manufacturers, . Foster Transformer Company is the clear choice for custom and standard transformers, power supplies, related magnetic ...
See Foster Transformer Company Information

Part Numbers for Power Supplies

Part # Distributor Manufacturer Product Category Description
Parani-UPA   Sena Technologies Power Supplies Power supplies to meet the needs at different power circumstances
Parani-BPC   Sena Technologies Power Supplies Power supplies to meet the needs at different power circumstances
PS649-R2   Black Box Network Services DC Power Supplies power supplies
VR2T   Black Box Network Services DC Power Supplies power supplies
PS649-R2   Black Box Network Services DC Power Supplies power supplies

More >>
See more product announcements for Power Supplies
Enhanced Reliability PC Card Switcher

Enhanced Reliability PC Card Switcher
Power Solutions Inc.


RAD Hard Line

RAD Hard Line
M.S. Kennedy Corp.


Industry Leading 180W Desktop Power Supply-PUP180

Industry Leading 180W Desktop Power Supply-PUP180
Power Partners


11 See more product announcements for Power Supplies

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