- AAK Corp
 - Power supplies/converters and custom precision regulators. - Abbott Electronics
- Low noise, AC/DC power converters, DC/DC power supplies and DC/AC sine wave inverters designed for industrial and military applications.
- AC Power Technology, Inc.
- Distributor of UPS, TVSS, computer power centres, MG sets, static transfer switches, harmonic cancellation transformers, dc powerboards, rectifiers, inverters, battery monitoring systems, and frequency converters.
- AcBel Polytech
- Designs and manufactures AC/DC and DC/DC power converters, adapters, chargers, and more.
- Acmexx Corporation
- Manufacturer of switching power supplies, and power adaptors.
- Acopian Power Supplies
- AC to DC power modules.
 Adept Power Solutions
- U.K. power protection specialist providing uninterruptible power supplies, generators, bypass switches, UPS batteries, and more.- ADS, Inc.
- A manufacturer of AC/DC battery power backup systems, charger/rectifiers, solar units, and precision sheetmetal enclosures.
- Advance Hivolt
- High voltage power supplies for applications including ion implantation, photomultipliers, X-ray equipment, lasers, and CRT supplies.
- Akowa Electronics Co., Ltd.
- Manufacturer of a broad range of DC to AC inverters and related products.
- All Shore Industries
- Designers and manufacturers of electronic assemblies, LCDS, transformers, adaptors, and chargers.
- Allis Electric Co.
- Manufactures uninterruptible power supply products, rectifiers for telecommunication use, battery chargers, transformers, switchgear, T&D apparatus, and vacuum equipment.
- Alpha Kilo Services Pty Ltd
- Providers of standard and custom power solutions including DC to DC, AC to DC, pulse transformers, and inductors.
- American High Voltage
- Broad spectrum of ruggedized, high reliability, high voltage power supplies.
- American Skynet
- Reliable & dependable power supplies.
- Americord
- Manufacturer and importer of power cords, extension cords, power cables, bulk wire, electrical cords, international and electronic cord sets, electric plugs, and receptacles.
- Ameritherm Inc.
- Solid state RF power supplies for precision induction heating; 50-450kHz frequency, 1-60kW output, automatic tuning.
- Amigo Global Yeou Diann Electric Industrial Co., Ltd.
- Manufacturer of AC/DC adaptors, AC/AC adapters, class 2 transformers, power transformers, battery chargers, SMP, and switching power supplies.
- Ample Technology
- Anoma Electric Company
- Offers ISO approved Ac/Dc adapters, external switching and linear power supplies, battery chargers, and transformers.
- Antares (Europe) Ltd
- Designs and manufactures inverters, battery chargers, DC converters, and power management systems for specialised vehicles and remote power applications.
- Applied Kilovolts
- High voltage power supplies.
- Applied Power Solutions
- OEM power supply manufacturer providing custom, medical, and industrial power supply solutions.
- Applied Power Systems
- APS manufactures advanced power conversion systems and power electronics controls, including inverters and converters, driver boards, and semiconductor assemblies.
- Argantix
- Offers programmable DC power supply products for industrial, military, and commercial test and measurement applications.
- Arnold Magnetics Corporation
- Rugged, severe environment, high reliability power supplies and DC to DC converters.
- Astrodyne Power Supplies
![[new]](http://eur.i1.yimg.com/eur.yimg.com/i/uk/g/new2.gif) - Manufacturer of AC-DC / DC-DC power supplies, converters & adapters: DIN rail mount, open frame, external, enclosed, medical, LED lighting, custom. - Avel Lindberg
- Offers power and toroidal transformers, DCDC converters, and uninterruptible power supplies.
- BC Power Systems
- Manufactures AC/DC converters, DC/DC and AC/DC power supplies, and high voltage power supplies for military, commercial, and telecommunications applications.
- Behlman
- Manufactures AC power supplies, frequency converters, uninterruptible power supplies (UPS), and more.
- Benning Power Electronics
- Designs and manufactures DC-DC converters, inverters, rectifiers, and UPS's for the Telecoms, Industrial and, Traction industries.
- Brandenburg
- Designers and manufacturers of high voltage power supplies.
- California Instruments
- AC sources and power supply manufacturer for harmonics, flicker, and frequency converters.
- Chloride Group
- Manufacturer of uninterruptible power supply units.
- Computer Power Supply (CPS)
- Specialises in high-precision high voltage power supplies used for focused electron beam and focused ion beam applications.
- Conversion Devices, Inc.
- Offers medical supply grade linear power and switching power supplies.
- CPI Advanced Inc.
- Maker of neon power supplies and sign accessories.
- Darnell Group
- Power electronics including ac/dc power supplies, dc/dc converters, uninterruptible power supplies,power quality,electric vehicles, solar energy, photovolatics and related components and systems.
- DEL Electronics
- Manufacturers of high voltage power supplies and transformers for medical, industrial and military applications.
- Delta Electronics Inc.
- Manufacturer of power supplies, electronics components, and video display parts, including adapters, chargers, LCD projectors, colour monitors, DC motors, and more.
- Delta Energy Systems
- Develops, manufactures, and markets customised power supplies, telecom power systems, and board mountable DC/DC converters for telecommunications, information technology (IT), network technology, and office communications.
- Deltron Inc.
- Manufactures standard and custom, switching and linear powers supplies for the telecom, datacom, mass storage, computer, medical, and OEM industries.
- Detas
- Transient suppressors, and EMI/EMC power line filters.
- Digital Power Corporation
- Designs and manufactures power supplies including AC/DC switchers and DC/DC converters.
- Ekotronic Ltd.
- Offers DC/DC converters, DC power supplies and chargers, and DC power supply systems.
- Electronic Design & Repair, Inc. (EDRI)
- Specialise in repairs, design and manufacturing of power supplies.
- Elpac Electronics, Inc.
- Manufacturer of power supplies, chargers, docking stations, film capacitors and filters.
- Eltek
- DC power supplies.
- EMCO High Voltage Corporation
- Manufactures high voltage power supplies for photomultiplier tubes, photodiodes, avalanche photodiodes, cathode ray tubes, lasers, spark gaps, capacitor charging, and general purpose uses.
- Endicott Research Group
- Manufacturer of power supplies for backlighting of information displays.
- Energy Technologies, Inc.
- Manufacturing rugged, high reliability power supplies for military, industrial, medical, and telecommunications sectors.
- Enertec Services Ltd.
- EPI Service Ltd
- Manufacturers of UPS systems, power conditioners and environmental monitoring systems. Offers complete computer room design and build service.
- Equi=Tech
- Clean AC power for audio and video.
- Filnor, Inc.
- Designer and manufacturer of power resistors, disconnect switches, control equipment, and transit products.
- Gamatronic Power Solutions
- Uninterruptible Power Systems (UPS's), Line Voltage Stabilizers, frequency and voltage converters, dc to ac inverters and battery chargers/power supplies.
- Gamatronic UK
- World class manufacturer of uninterruptible power supply systems and power supply electronics, leveraging 35 years of successful experience.
- Glassman High Voltage
- Specialises in high voltage, DC, regulated, air insulated, hv, and rack mounted power supplies.
- Globtek, Inc.
- Manufactures linear and switch mode power supplies and adapters plus power cord, wire, and cable. Also provides OEM/ODM contract manufacturing services.
- Helms-Man Industrial Co., Ltd.
- Manufactures a variety of certified linear adapters, chargers, and SMPS.
- Horsodan Elektronik A/S
- Researches, designs, and manufactures monitors, power supplies, and electronic components. Supplier of hydrographic, navigation, and docking systems.
- Huettinger RF Power Supplies
- Medium frequency and RF power supplies from 300W up to 150kW at frequencies up to 13.56MHz, applications include induction heating, plasma sputtering, cap sealing and thin film deposition.
- Innovative Energies
- Manufacturer of DC power supplies, DC-DC converters, no-break power supplies, security power supplies.
- International Power Sources
- Switchmode power supplies from 1 to 600W.
- Invertech Enterprise Inc.
- Specialises in power inverters, including DC to AC power inverters, switching DC to DC converters, modified sine wave inverters, and chargers.
- IQS: Power Supplies
- Directory of manufacturers of power motors as well as AC/DC, high and low voltage, switching, plug-in, and industrial power supplies.
- Jerome Industries
- Designs and manufactures power adaptors for the medical, datacom, and industrial markets.
- Jiming Power Co.
- Manufactures AC adaptors, transformers, power supplies, and more.
- Kepco, Inc.
- Manufacturer of AC to DC and DC to DC power supplies. Specialists in programmable power analogue and digital control GPIB and VXI-based switch-mode for industrial and OEM applications.
- Lien Engineering, Inc.
- Manufactures custom power supplies and enclosures.
- Link Champ
- Manufacturer of DC/AC power inverters and DC/DC converters.
- Litone Electronics
- Manufacturer of switching power supplies, switching adaptors, power adaptors, transformers, and high-performance power transformers.
- Lumina Power, Inc.
- Manufactures laser diode power supplies that can deliver up to 80A and 1500W.
- Magic Power Technology Inc.
- Manufacturer of switching power supplies, including medical grade and industrial grade AC/DC switching power supplies and DC/DC converters.
- Magnetek
- Industrial, commercial, and residential high efficiency electrical products including motors, generators, electronic drives, and power supplies.
- Magnetek Power Electronics Group
- Providing global engineering, manufacturing, logistics resources, and power solutions.
- Martek Power Abbott, Inc.
- Full service designer and manufacturer of high-performance custom power systems.
- Matsusada Precision, Inc.
- Maker of high voltage power supplies for OEM and laboratory applications.
- McDowell Research Corporation
- Design and manufacture of power systems and battery chargers for worldwide military and industrial applications.
- MCL, Inc.
- High voltage power supplies for TWT amplifiers and other applications.
- NH Research
- Programmable ac sources, dc supplies, electronic loads, electronic manufacturing test systems, and power product tests.
- Oltronix Power Supplies
- Produces power supplies.
- Optimal Power
- Designer, producer, and supplier of power supplies and power supply related products for computer and networking, utilities, medical, and power companies.
- PACS Industries, Inc.
- Switchgear manufacturer of circuit breakers designed for generators, substations, transformers, and power plants.
- Pan Yes Electronics
- Manufacturer and exporter of switch mode and AC/DC switching power supplies, DC/DC converters, and DC adaptors.
- Pioneer Magnetics
- Manufacturer of AC to DC and DC to DC switching power supplies.
- Polytron Devices
- Power supplies, converters, power modules, DC/DC converters, and switches.
- Power Bank Electric
- Power Bank Electric are the makers of solar panels, solar energy products, AC/DC inverters, pure sine wave inverters, and electrical and electronics protective devices.
- Power Designs Corporation
- Provides custom and semi-custom supplies, converters, and magnetics.
- Power-One
- Products that refine electricity into the many voltage and reliability levels needed to power high availability infrastructure systems. Power-One produces DC-DC converters, AC-DC power supplies, complete systems, and more.
- Powercom Co.
- UPS manufacturer offering a full range of power protection products. Powercom makes offline, online, and line-interactive UPS, inverters, AVR, surge protectors, and related software.
- Powerld Electronics
- Manufactures switching power supply, DC DC modules, as well as AC DC and DC DC power supplies. Site includes factory photos and certification, as well as product and contact information.
- Powermetrics, Inc.
- Custom-engineered AC-DC and DC-DC power supplies for telecom, computer, industrial instrumentation, transportation, and medical applications.
- powermonkey
- Offers a portable USB power unit for charging cell phones, MP3 players, and digital cameras when you're travelling abroad.
- PowerVolt Inc.
- Manufacturer of standard and custom transformers/magnetics. Designers and manufacturers of linear DC power supplies.
- PS Audio Power Products
- Power quality and power protection products for the home, the theatre, and the recording studio, including the P300 Power Plant.
- Q-Tran
- Serving the lighting and emergency lighting industry with remote toroidial transformers and power supply centres.
- Resonant Power Supply, Inc.
- Designer and manufacturer of medical grade linear and switching ac/dc power supplies.
- Richard Gray's Power Company
- Manufactures reactive devices that allows consumers to plug in a home theatre system in order to receive high current.
- Rochester Instrument Systems
- Manufactures transient recorders, microprocessor-based relays, calibrators, annunciators, and signal conditioners.
- Roshe Power Ltd.
- Designs and manufactures transformers and associated equipment.
- Samlex
- Complete specifications and applications.
 Schneider Electric Ireland
- South American Development Corporation
- Manufactures custom passive magnetic power supply components, including toroids, coils, inductors, and transformers.
- Speedy-Tech Electronics
- Offers switched-mode power supplies, printed circuit board assemblies, and contract manufacturing services.
- Spellman High Voltage Electronics Corporation
- Develops/manufactures high voltage power supplies for OEM and laboratory applications including medical and analytical X-ray, projection TV, and more.
- Staco Energy Products
- Manufacturer of voltage control products as well as products that improve power quality.
- Standard Trading Co.
- Manufacturer of AC/DC and DC/DC adapters, switching power supplies, battery chargers, and open frames.
- Sunlit MFG. Corp.
- Manufactures and sells DC-AC pure sinewave inverters, converters, surge suppressors, power supply system for CATV (pole hanging), and uninterruptible power systems.
- SVJ International Technology Research
- Designers and producers of uninterruptible power systems and stabilizers.
- Swichtec Power Systems
- Designs and manufactures standby DC power equipment for the communications industry.
- SynQor
- Manufacturer of DC/DC modular power converters.
- SYS Electronics Co., Ltd.
- Designs and manufactures of high voltage power supplies, units, and transformers.
- Toneluck Switch
- Manufactures push buttons, snap action switches, detector switches, and penshavers.
- Tri-Mag, Inc.
- Manufacture and supply a variety of a.c. line filters, switching power supplies, dc-dc converters, industrial computer chassis, and other power related products.
- TSi Power Uninterruptible Power Supply (UPS) Product Catalog
- TSL Inc.
- Designing and manufacturing electronic instrumentation, data systems, power supplies and solid state rf equipment.
- UltraVolt
- Manufacturer of DC-to-DC high voltage power supplies.
- Universal Voltronics
- High voltage power supply design engineers.
- UV Electric, Inc.
- Supplier of standard and custom high-power electronic ballasts for UV applications.
- V-Infinity
- Specialising in a wide range of DC-DC converters and AC-DC power supplies in open PCB, metal enclosed, and u-frame models.
- Vector Manufacturing Ltd
- Manufactures and sells power inverters, portable jumpstarters, hand held lighting, and more.
- Vicor Corporation
- AC-DC and DC-DC power solutions. Vicor produces modular components for rapid and flexible power system development, including DC-DC converters, filters, rectifiers, configurable power supplies, and custom systems.
- Volgen America Inc.
- AC/DC, DC/DC and adapter style power supplies.
- Voltage Multipliers, Inc. (VMI)
- Makers of high voltage power supplies including standard and custom high voltage power supplies for CRT, X-ray, electrostatic, laser, medical, and other applications. ISO 9001:2000 approved.
- William I. Horlick Company, Inc.
- Standard and non-standard frequency and power converters, variable frequency changers, motor and diesel generators, and control systems.
- XCEL Corporation Ltd
- Power supplies for defence, avionic, and telecoms applications.
- Zane International
- Designs and manufacturers DC power systems, converters, flashers, and dimmers for battery powered applications including Caravan, marine, commercial vehicles, and solar electric.
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