A power supply is an autonomous system or subsystem that furnishes the electrical energy required for a device's functioning.
The main energy source is usually provided by an electric power network (direct, alternating, single-phase or three-phase). A power supply converts this energy into a form immediately usable by the device.
Power supplies are adapted to given uses (stabilized voltage, stabilized current, precision, etc.).
Power supplies fall into two main categories: linear and switch-mode. They also can be classified by output current: alternating (AC) or direct (DC).
A power supply can be considered to be a system that transforms input electrical energy (often the power grid) to output electrical energy (fed to the device or machine). The four types of conversions are: AC/AC, AC/DC, DC/DC and DC/AC.
Choice of a power supply depends on the type of output energy required by the device or machine. Another factor is the type of primary electrical energy input (power grid, batteries, alternator, photovoltaic, etc.). Finally, one must choose the desired technology: linear (using transformers and conventional components) or switch-mode (modern and more compact).
 |
  |
SITOP smart is the optimal power supply for many 24 V applications. The new SITOP PSU100S for single phase networks delivers 20 A rated output current. For 3-phase networks SITOP PSU300S with...
 |
  |
AC/DC switch-mode power supply: encased type 1 - 60 V @ 5 A | Model 1685B B&K Precision
The B&K Precision 1685B, 1687B, and 1688B switching mode DC power supplies provide various configurations of high output voltage or high output current in a small, lightweight form factor. In addition to their constant voltage (CV) and constant current (CC) modes, these high efficiency DC...
 |
 |
AC/DC power supply: voltage rectifier for industrial networks 30 V PEPPERL & FUCHS
Power supplies Pepperl+Fuchs power supplies meet PELV requirements In an AS-Interface network, data is transferred and power is supplied along the same cable. The power supply is...
 |
 |
The GS820 is equipped with two analog channels with each channel consisting of a constant voltage source VS, a constant current source IS, a voltmeter VM, and an ammeter IM. The two source measure channels are isolated. Application Examples - DC voltage/current reference,...
 |
 |
Multi-conductor crane power supply system max. 500 VAC | DKK Demag Cranes & Components
DKK compact conductor line is a space-saving solution for mobile electric equipment including cranes, trolleys, travelling electric tools and other appliances. It is suitable...
 |
 |
Crane power supply system INGERSOLL RAND
Ingersoll-Rand offers both air and electrical power supply kits. Air supply kits are available in both 3/8 and ½. Kits are available with a filter/regulator...
 |
 |
Multi-conductor crane power supply system max. 500 VAC | DKK Demag Cranes & Components
DKK compact conductor line is a space-saving solution for mobile electric equipment including cranes, trolleys, travelling electric tools and other appliances. It is suitable...
 |
 |
Dual pulse power supply for spot welding DP series Miyachi
Designed specifically for precision resistance welding applications, the Dual Pulse Series capacitive discharge power supplies are microprocessor controlled, store multiple weld schedules, and provide...
 |
 |
AC/DC power supply: voltage rectifier for industrial PC 250 - 400 W, AT/ATX RITTAL
250/300/400 W power supply units for ATX and CPCI systems Key features...
 |
 |
AC/DC switch-mode power supply: for DIN rail 15 - 500 W | G3, PFC series ANGST + PFISTER
We offer switched-mode power supplies with an input voltage of 85 VAC to 264 VAC and an output voltage of 3.3/5/12/15/24 VDC to 48 VDC....
 |
 |
AC/DC power supply: voltage rectifier for industrial networks 240 VAC | AC12xx series ifm electronic
Wide-range input, 100...240 V AC + or ±10 %. Low cabinet control heating due to high degree of efficiency. UL Limited Power Source AC1236. Power supplies for the fully expanded AS-i system. Stable...
 |
 |
The 70703 is a simple, low cost laboratory power supply. We use it to power our preamplifiers and...
 |
 |
AC/DC power supply: linear regulator MD series Miyachi Europe
MIYACHI MDA1000K/MD5000A are transistor controlled power supplies which offer the following benefits: Multiple...
 |
 |
AC/DC power supply: 19" rack mount voltage rectifier 24 V DC, 600 mA | PFP 700 Elster Kromschröder
Power supply in 19" standard rack for supplying the...
 |
 |
AC/DC power supply: voltage rectifier for fieldbus max. 28 V, 1 A | 9412 series STAHL
For FOUNDATIONTM fieldbus H1 segments, simplex or redundant Galvanic isolation between fieldbus segment and power...
 |
 |
78 Series - Switch mode power supplies Features: Range of modular...
 |
 |
AC/DC power supply: rack mount module 24 VDC, 2 A | CX1100-000x BECKHOFF
CX1100-000x | Power supply units and I/O interfaces for CX1010/CX1020 One of four power supply modules can be selected for CX1010/CX1020 systems. The power supply of all other system components is ensured via the internal PC/104 bus; no separate supply lines are required. However, the CX1100 components offer further important characteristics...
 |
 |
Power supply for clutch and brake control 12 - 90 VDC, 115 VAC WARNER ELECTRIC
Power Supplies Warner Electric's popular "One Shot Power Supplies" are controls designed for the...
 |
 |
The TruPlasma DC Series 3000 NEW is a new generation of compact, water-cooled continuous DC power supplies that...
 |
 |
AC/DC power supply: voltage rectifier encased type 12 - 48 V | EPSITRON® 787 series WAGO
With the EPSITRON® 787 Series, WAGO offers a full line of industrial power supplies,...
 |
 |
AC/DC power supply: voltage rectifier for industrial networks HARTING
HARTING will be presenting its smart Power Networks system as an active energy management system at the Hannover Messe 2012 trade fair. The smartPN-Units are integrated into a virtual industrial environment for the fair...
 |
 |
Combined pico-ammeter and AC / DC power supply max. 20 mA, ±30 V | 6482 Keithley Instruments
The Model 6482 Dual-Channel Picoammeter/Voltage Source provides two independent picoammeter/voltage source channels for a wide range of low-level measurement applications that require dual-channel measurements. Building...
 |
 |
AC/DC power supply: rack mount voltage rectifier 20 W | N6784A Agilent Technologies
The Agilent N6784A is a source/measure unit (SMU) designed for general-purpose precision sourcing and measurement. General-purpose applications can span many different industries and many different devices under test (DUTs). The N6784A SMU is a versatile tool designed to tackle many of these general-purpose applications. Its glitch-free operation ensures safe usage with the DUT during output...
 |
 |
With excellent design parameters such as power density, operation at high temperatures, efficiency, lifetime, etc., the FP-PS24 high-end power supply units...
 |
 |
AC/DC power supply: benchtop voltage rectifier 18 - 72 V, max. 6 A | PWS2000 Series Tektronix
PWS2000 DC Power Supply Series Affordably Generate the Voltage or Current You Need The PWS2000 Power Supply Series is designed with...
 |
 |
AC/DC power supply: voltage rectifier / measuring device 350 W | R&S®NGMO Rohde Schwarz
The R&S®NGMO analyzer/power supply is more than just a simple power supply for test and measurement applications. This is shown by its advanced features: * Accurate high-speed voltage source * Programmable DC load * Precise...
 |
 |
AC/DC power supply: voltage rectifier front-end type 350 - 3 000 W Astec Power
1U distributed power front-end Emerson Network Power produces three series of 1U high ac-dc front-end power supplies for systems that use distributed power architectures (DPA) and intermediate bus architectures (IBA). The HPS35 series of 1U high ac-dc front-end power supplies comprises three 350 watt models, each with a single output of 12, 24 or 48 Vdc. Up to four power supplies can be fitted in...
 |
 |
The C1U-W-1200 is a 1200 Watt universal AC input, power-factor-corrected (PFC) front-end power supply for general applications. The main output is...
 |
 |
AC/DC power supply: voltage rectifier open frame type RoHS | BPS-005 Series DWYER
The Model BPS-005 Low Cost DC Power Supply is a regulated .5 A power supply that accepts...
 |
 |
AC/DC power supply: voltage rectifier for DIN rail 2711 - 2711P Allen Bradley
We offer a DIN-rail mount power supply, a wall-mount power supply or a DC terminal block for your PanelView™ graphic terminal. Features DC terminal...
 |
 |
AC/DC power supply: voltage rectifier for DIN rail 24 - 28 VDC, 30 W | PS-30 Westermo
The PS-30 is a DIN-rail power supply unit (PSU) complying with many major safety approvals. The robust plastic housing makes the PSU small and the fine ventilation grid prevents small...
 |
 |
AC/DC switch-mode power supply: for DIN rail 24 V | SN3 series Eaton Moeller
Switched-mode power supplies SN3 - the ideal power supplier for your 24 V DC PLCs The switched-mode power supply unit is indispensable in the fields of power engineering and automation. The technology features a high efficiency and the development of heat and power losses...
 |
 |
AC/DC switch-mode power supply: for DIN rail ROCKWELL AUTOMATION
We offer a DIN-rail mount power supply,...
 |
 |
AC/DC switch-mode power supply: DIN rail mounted / panel mount Weidmüller
Primary switched-mode power supply unit The switched-mode power units of the ConnectPower series are suitable for universal because of their variable input from 85 VAC to 265...
 |
 |
AC/DC switch-mode power supply: DIN rail metal frame 50 - 600 W | S8JX-P Omron Europe
EMI Class B and Power Factor Correction The main improvements provided by the S8JX-P models are Harmonic current suppression/PFC (Power Factor Correction) and EMI EN55011 Class B compliant. In addition,...
