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This section provides an overview for ac adapters as well as their applications and principles. Also, please take a look at the list of 45 ac adapter manufacturers and their company rankings. Here are the top-ranked ac adapter companies as of December, 2024: 1.CUI Inc, 2.Mark-10 Corporation, 3.Shuogong Power.
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Categories Related to AC Adapters
An AC (alternating current) adapter is a device that converts AC power to DC power between a power outlet and an electronic device.
AC power is supplied as commercial power from power companies to power outlets in ordinary homes. Since common electronic equipment operates on DC voltage, it must be converted from AC power to DC power. Large household appliances that do not need to be carried around have conversion circuits built in beforehand.
On the other hand, electronic devices that are often carried around do not have built-in conversion circuits for portability. Against this background, AC adapters are used to convert AC power into DC power.
AC adapters are widely used in our daily lives. Examples include smartphones, tablets, game consoles, and laptop computers.
AC adapters are often used in mobile devices that are small enough to be carried around and are also useful for reducing the weight and safety of the device itself. By separating the main body of the device and the conversion circuit, the weight is reduced, and user safety is ensured by converting high-voltage commercial power to low-voltage.
In addition to 100V and 200V commercial power sources, power can also be supplied from automobiles and airplanes if the appropriate adapters are provided for input and output, making it a highly versatile product that can supply power without being tied to a specific power source.
AC adapters generally receive AC current from an input power source first by means of an AC pin. The current passes through a fuse and flows into a line filter. The line filter reduces the noise caused by the current change.
The current then flows into the diode for full-wave rectification. This mechanism converts the negative voltage input from the power supply into a positive voltage, which is then rectified and changed into direct current.
However, since the current rectified by the diode is not a perfect DC, the next mechanism of the electrolytic capacitor into which the current flows smooth the wave of electricity into a wave closer to a straight line.
The current converted to DC then enters the transistor, where it is converted to a square wave to maintain a stable output voltage. The current converted to a square wave enters the transformer and is adjusted to the optimum voltage. Finally, it is further smoothed by an electrolytic capacitor on the output side.
The AC adapters generate stable direct current by repeating the above process.
AC adapters consist of a power plug, a main body, and an output connector.
The power plug of the AC adapters is the part that plugs into the wall outlet. The shape of the plug is standardized by regional standards, and if you want to use the AC adapter plug outside your home country, you will need a separate conversion adapter.
The body of the AC adapters contains a circuit that converts AC power into DC power. The rectifier and stabilizer circuits are the functional parts of the AC adapters; the larger the output power of the AC adapters, the larger the circuits and the larger the size of the body.
The output connector is the part that connects to the electronic device. There are various types of connectors, including standardized connectors and connectors that are unique to the manufacturer.
There are two types of AC adapters: switching type and transformer type.
Switching-type AC adapters have become mainstream since the 2000s and are said to have originated in the 1960s when they were developed by the National Aeronautics and Space Administration (NASA) as a power source for rockets.
In addition to being compact and lightweight, these power adapters are waste-free and highly efficient because they use transistors and other control circuits to adjust the pulse width and stabilize the voltage.
Transformer-type AC adapters are also known as linear or dropper-type adapters. They have been in use since before switching AC adapters became popular, and are inexpensive AC adapters with simple control circuits. It is also a large and heavy adapter that uses a power transformer with a structure of coils wound around an iron core.
On the other hand, compared to switching-type adapters, AC adapters are less prone to noise and are used for audio equipment and medical equipment.
When selecting AC adapters, check the label on the AC adapter itself and the rated voltage of the connected device. The conversion method and type of output connector must also be compatible.
Since AC adapters are power supply devices, if they are not used properly, they can cause not only malfunctions of the adapter and equipment but also accidents such as fires.
Generally, the model name and model number are indicated on the labeling. In addition, I/P, O/P, L.P.S., plug polarity, and many other information are listed.
I/P indicates the input voltage, which ranges from 110V to 240V, and the voltages handled vary from country to country.
O/P indicates the output voltage.
L.P.S. stands for "Limited Power Source" and refers to power supplies with restrictions on maximum output voltage, output current, and power rating, as specified in the IEC60950 international standard.
The polarity of a plug indicates the outer and inner diameters of the plug, which are indicated as center plus and center minus. Most adapters available on the market are center-positive. However, if an adapter with a negative marking is mistakenly inserted into an adapter with a positive marking, it may cause equipment failure. Therefore, the polarity of the plug must also be checked.
*Including some distributors, etc.
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SV Microwave, a company founded in 1995 and headquartered in West Palm Beach, Florida, is a manufacturer of radio frequency and microwave connectors and components. The company specializes in providing a wide range of products, including coaxial connectors, cable assemblies, adapters, and other RF components, catering to various industries like aerospace, defense, telecommunications, commercial and military. Additionally, the company also offers customer services that include technical support, technical expertise, and customized solutions to meet clients’ needs.
L-com was founded in 1982 and is headquartered in North Andover, Massachusetts. The company serves many industries including electronics, medical, industrial automation, military, and telecommunications a manufacturer and servicer of wired and wireless communications products. The company’s custom product capabilities include customized cable assemblies, WiFi antennas, adapters, and surge protectors. Through its parent company, Infinite Electronics, the company offers a broad range of RF components and assemblies to over 100,000 global customers.
Maury Microwave, established in 1957, has its headquarters in Ontario, California, and is a manufacturer of microwave-based measuring, testing and calibration equipment, automated tuning systems, and noise parameter measurement for the aerospace, defense, and wireless telecom industries. The company has strategic alliances with Anteverta Microwave, AMCAD Engineering, and Vertigo Technologies to produce a wide range of products and composite solutions for radiofrequency measurement and interconnect systems to strengthen wireless communication technologies and networks.
NARDA-ATM, formerly known as Advanced Technical Materials Inc. and acquired by Narda-MITEQ in 2016, is an American manufacturer based in Hauppauge, New York, specializing in microwave and radio frequency (RF) components. NARDA-ATM offers a wide range of components, including coaxial, waveguide, Ka-band satellite communication (satcom), and space-qualified microwave components. These components can be manufactured to meet commercial standards or full military specifications, such as military flight and space quality standards. Equipped with microwave measurement capability up to 50 GHz, as well as Computer-Aided Design (CAD) software and Computer Numerical Control (CNC) machining equipment, NARDA-ATM offers custom component design and manufacturing services.
Fairview Microwave was established in 1992 in Lewisville, TX, and is a manufacturer of RF and microwave components for industrial automation, military defense, telecom-broadband, commercial electronics, and building automation industries. Its RF product catalog includes RF noise source generators, RF power dividers and tappers, RF coaxial surge protector lightning, RF connector dust caps, and RF power combiners. The company also designs bias tees, calibration kits, frequency synthesizers, impedance matching pads, and hybrid couplers. It provides cable phase matching, 3D CAD drawings, and RF cable design services.
Spectrum Control is based in Pennsylvania, USA, and is a manufacturer of microwave and radio frequency (RF) subsystems and components for the defense industry that was originally established in 1963 before its acquisition by API Technologies in 2011. The company produces conditioning and distribution products such as RF signal couplers, digital blocks such as RF signal modulators, and power distribution accessories such as inverters. It also offers EMI protection products and integrated microwave assemblies tailored to customer specifications. The company’s products are used in the defense and aerospace industries, with additional applications in military-grade secure systems.
Amphenol RF, established in 1925 with headquarters in the USA, is a global manufacturer of coaxial connectors for use in radio frequency, microwave, and data transmission system applications. The company's product portfolio covers a wide range of RF connectors, coaxial adapters, and RF cable assemblies that provide reliability in a range of harsh environments and rough-use situations. It serves the broadband, IoT, instrumentation, medical, military, and wireless markets. Examples include mission-critical military electronic systems, ruggedized communications, and RF signal connections to enable automation in warehousing and logistics.
Krytar, Inc. is an American ISO 9001 certified manufacturer specializing in microwave and millimeter wave components and devices since 1975. Based in Sunnyvale, California, the company produces a range of products including directional couplers, power dividers, and terminations that absorb wave signals and prevent reflection — as well as RF components and test equipment for commercial and military use. Krytar products are used in the defense, aerospace, and communications sectors. The company also provides engineering and calibration services for clients with demanding specifications.
Mark-10 Corporation is a designer and manufacturer of force and torque measurement products established in 1979 and based in Copiague, New York, USA. The company offers torque gauges for measuring rotational force, force gauges for tension or compression testing, and compatible software for data collection and analysis. It also offers related accessories for its portfolio products, such as grips and fixtures, motorized test stands, and wire pull testers. The company’s products are mainly used in industrial manufacturing and automation operations.
CUI is manufacturer of electronic components intended to create ease of access to power supply products. Established in 1989 and situated at USA The company offers PC adapters, wall plugs, board mounts and chassis mount as well as isolated and no isolated converters to clients. CUI Global is a publicly traded holding company devoted to maximizing shareholder worth through the acquisition and development of ingenious companies and technologies. From its GasPT2 platform targeting the energy sector, to its subsidiary the company is a elite digital power platform targeting the networking and telecom industries,
AR RF/Microwave Instrumentation, founded in 1969 and located in Souderton, Pennsylvania, is a distributor and manufacturer of AR and RF/microwave instrumentation. The company’s diverse product range includes AR systems, amplifiers, antennas, conductivity test systems, and RF test accessories. These products are used in research and development, testing laboratories, manufacturing, telecommunications, and defense sectors. AR RF/Microwave Instrumentation's offerings facilitate accurate testing, validation, and analysis of RF and microwave components, systems, and devices, ensuring efficient performance in electronic systems and communication technologies. The company is also ISO 9001:2015 certified and ISO 17025:2017 accredited.
JFW Industries Inc. designs and manufactures passive RF components and application-specific test systems. Established in 1979, the company is headquartered in Indianapolis, Indiana, USA. The company's main activities encompass manufacturing a wide range of RF and microwave components, including attenuators, switches, power dividers, and custom RF solutions. These components are essential for various industries like telecommunications, aerospace, and defense, enabling seamless communication and signal processing. JFW Industries Inc. also offers services such as custom design and engineering solutions for different RF challenges.
Copper Mountain Technologies designs and manufactures equipment for Radio Frequency testing and measuring solution devices for engineers universally. The Organization was incorporated in Indianapolis, USA with offices and service centres located around the globe. The company has an international client base in around hundred countries with more than thousands of customers.They primarily supply vector network analysers for their clients.Their Vector Network Analysers include a Radio Frequency measurement module and a software application which can be used in an external personal computer, laptop or tablet and connects to the measurement hardware via USB interface.
RFMW has been a supplier and distributor of specialized radio frequency (RF) and microwave components since it was founded in 2003 and is based in California. They provide RF & Microwave and Power Component distribution that focuses on Technical and Supply Chain Solutions and these include Active Devices like Diodes, Transistors, Amplifiers, Control Components, and more along with Passive devices such as Filters, Inductors, Antennas and alike. They also have Power Management and Interconnect/T&M components which help them serve military, aerospace, test, measurement, medical, and commercial markets.
IBHsoftec GmbH, established in 1986 and headquartered in Oberzent, Hessen, Germany, is a specialized manufacturer of automation solutions for industry. The company's core products include PLC programming systems and SoftPLC solutions. These products are used to automate various equipment and industrial production facilities with management control systems and factory floor machinery, as well as online management systems. The company supplies original equipment manufacturers, original design manufacturers, and bulk order clients, as well as offering custom product manufacturing.
Sunny Computer Technology (SCT) is a manufacturer of switching power accessories and supplies originally founded in 1980 and currently headquartered in Brno, Czech Republic, with a Chinese division based in Hengli Dongguan. The company produces various power supplies including desktop and wall mounted models, USB charging stations for smart devices, and power and extension cables. Other products include accessories like connectors, LED drivers and car adaptors. These primarily supply clients in the consumer electronics, telecommunications and security systems sectors, for whom SCT also provides custom product development and certification services.
RSCROUP was founded in 1937 in London and is a manufacturer of industrial products and electronics, providing solutions to customers across EMEA, the Americas, and Asia Pacific. The company offers various products such as black foam tape, hand tap and drill tap sets, twist drill bits, air dusters, and more, all of which undergo thorough testing, inspection, and auditing. It offers a full range of solutions and services to provide support throughout the industrial life cycle.
Dongguan Komikaya Electronics Co., Ltd. was established in China in 2011 as a manufacturer of consumer electronics products. Its product range includes USB cables, HDMI cables, mobile phone chargers, power adapters, and cable assemblies, among others. One of its products is the cable assembly, which consists of wires, cables, and connectors used for transmitting electrical signals between components, enhancing reliability and reducing the risk of electrical issues. Its power adapters are representing the direction of development in regulatory power supply and are used in everyday life by people and in various industries.
Shuogong Power, established in 2006 and based in Guandong, China, is a manufacturer of various power control transformers. The product offerings include single-phase and three-phase transformers, voltage transformers, and current transformers. These transformers are designed to provide efficient voltage conversion, current measurement, and electrical isolation, ensuring optimal power distribution and control in various electrical systems. The transformers find application in industries such as electronics, telecommunications, manufacturing, and renewable energy. The ISO, RoHS certified company offers stable and optimal-performance transformers that meet international standards for power control solutions worldwide.
FSP Technology Inc., established in 1993, is based in Taoyuan, Taiwan, as a manufacturer of electronic power supplies. It specializes in manufacturing battery chargers and PV inverters. It also manufactures AC/DC power supplies, such as IPC power supply units, open-frame power supplies, and solid-state lighting power supplies. The company obtained several ISO certifications, including ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018. In 2022, it patented master-slave interchangeable power supply devices, power converters, and computer casing products. Its manufactured products are catered to smart MicroGrids, medical, gaming, PD charger, and edge computing sectors across Taiwan, the UK, China, Germany, and the USA.
Li Tone Electronics, established in 1986, is a manufacturer and supplier of electronic components and power supplies, headquartered in New Taipei City, Taiwan. Their product range includes high-frequency transformers, power inductors & coils, AC/DC adapters, and LED drivers. These products can be applied in industries such as telecommunications, consumer electronics, industrial automation, and automotive. Li Tone Electronics is certified with ISO 9001 for quality management and ISO 14001 for environmental management.
Adapter Technology Co., Ltd., established in 1973 with headquarters in Taipei, Taiwan, is a manufacturer of equipment and device power supply units. The company's products include GaN (gallium nitride) power supplies that recharge devices many times faster than other units, ITE (inverse time element) power supplies designed for ITE applications such as studio recording equipment, medical power supply units that meet medical industry standards, and power supply units with USB connectors. It welcomes orders from OEMs, ODMs, and private label manufacturers.
Marki Microwave Inc. is an ISO 9001:2015-certified broadband and high-frequency microwave product manufacturer established in 1991 in Morgan Hill, California, USA. The company offers filters for passing or rejecting signals based on frequency, amplifiers for increasing the amplitude or power of selected signals, and mixers for combining two or more signals at different frequencies. It also offers power dividers, couplers, and baluns for converting balanced signals. The company’s products are used in the telecom, aerospace, and defense sectors.
ZTS Technologies Co. Ltd., established in 2006 and headquartered in Shenzhen, China, is a manufacturer of passive RF/microwave components and related systems. The company specializes in coaxial attenuators, terminations, and DC blocks, catering to commercial and military applications. It also offers RF switches and RF passive components, ensuring solutions for diverse RF applications. Its cable assemblies from 6GHz to 110GHz ensure market demands and meet high-cost efficiency and short delivery times. The company also offers microwave and mm-wave devices, modules, and systems, such as frequency sources, amplifiers, and isolators/circulators, that are compliant with RoHS standards.
UIY Inc., established in 2003 and headquartered in Shenzhen, China, is a designer, manufacturer, and supplier of RF and microwave communication components and devices. The company's products include RF isolators, RF circulators, and TX-RX combiners and splitters. These products are used for aviation communications, coaxial cable telecommunication, and data transmission systems. It works with original equipment manufacturers and private label clients to produce custom products on demand. It serves sectors that include military, aerospace, and space technology.
Amphenol Cables on Demand, is an Amphenol-owned cable manufacturer and online retailer established in 1932 in Chicago, Illinois, the United States. The company’s product range includes a wide range of cables such as Category-8 (CAT8) network patch cables that support 25G/40G Ethernet runs up to 100-feet with shielded twisted pair Ethernet cables. It offers thousands of factory-direct, in-stock, ready-to-ship, industry-standard cables for computer I/O, networking, communications, data center and electronics test applications. It provides first-rate cables at competitive prices.
The Imaging Source (TIS) is a Bremen, Germany-based manufacturer of cameras and other imaging solutions for industrial, medical, and scientific applications. Established in 1988, the company develops and produces board cameras, stereo cameras, and microscope cameras, as well as their relevant accessories and optics. The company’s products are used in various tech-oriented sectors including quality assurance, production automation, private security, and logistics. With branches on three continents, TIS also offers technical support, consulting, and training services to client corporations like Toyota, NASA, and Intel.
RRC Power Solutions is a manufacturer and supplier of advanced power solutions for various industries that is based in Germany, Established in 1989, the company specializes in designing and manufacturing custom battery packs, chargers, and power management systems. Their product lineup includes rechargeable battery packs, smart chargers, power supplies, and energy storage systems. These solutions cater to various industries, including medical devices, industrial automation, telecommunications, and transportation. One sample product is the "RRC2130" custom battery pack, specifically engineered for rugged and demanding applications which delivers high energy density, and long-lasting power for critical devices and equipment.
Aimtec, founded in, Vaudreuil-Dorion, Quebec, in 2002 is a manufacturer of modular Isolated DC-DC switching power converters, AC-DC power supplies, and switching regulators. The company's product portfolio includes EMC filters and LED drivers, Switching Regulators, LED Drivers, and Photovoltaics. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. They have offices in offices in Europe and Asia and also offer customer services that include support, custom research projects and customized services.
Advantech Co., Ltd., established in 1981 in Neihu District, Taipei, is a pioneering manufacturer and designer of a range of products, solutions, and services. The company boasts an extensive product portfolio that includes system integration, customer-centric design services, cutting-edge embedded systems, automation products, and global logistics support. Its aim is to usher in an era of an intelligent planet through its automation and embedded computing products and solutions. These diverse products and services empower smarter ways of working and living to enhance the quality of life and productivity across various industries.
Delta Lasers Technology Ltd. is a manufacturer and supplier of industrial laser products that was established in Sofia, Bulgaria in 2011. The company’s product portfolio includes positioning or alignment lasers, drilling lasers for workpiece preparation, and laser projectors for industrial manufacturing processes. It also offers custom design services, as well as product maintenance and repair for customers requiring additional support. The company chiefly serves its clients in Europe’s stone and marble, industrial manufacturing, and transportation sectors.
CHK Elektronik, established in 2005 and based in Germany, is a manufacturer of electronic components and systems. The company offers a diverse range of products, including chokes, current transformers, inductors, power supplies, and transformers. Their product range serves various industries such as plant engineering, control installations, electronic assembly, welding technology, and automotive engineering. CHK Elektronik also provides comprehensive design and manufacturing services to OEMs and distributors worldwide and holds ISO 9001 certification.
Arrow Electronics, Inc. is a manufacturer and supplier of electronic components and enterprise software that was established in 1935 in New York City, New York, USA. The company primarily produces electronic components including interconnect cable assemblies, semiconductors, and fiber optics. It also offers enterprise computing software such as security suites, servers, and cloud hosts. The company is ISO 9001, ISO 14001, and ISO 45001-certified, and provides custom design as well as engineering services for its clients with unique projects.
Electronic Grup, S.L is an importer and distributor of electronic, computing, and telephone products that was established in Catalonia, Spain in 1998. The company mainly markets products from brands such as Arduino, D-Link, and Samsung. It stocks microcontrollers for use in embedded systems, resistors for adjusting voltage in a circuit, and transistors for amplification or switching. It also offers LEDs and integrated circuits for chips and semiconductors. The company chiefly markets to clients in the audiovisual, telecom, and robotics industries.
Established in 1991 in Taipei, Taiwan, Cincon Electronics Co., Ltd is a global supplier of switch mode power conversion products to the railway, communications, computer, industrial, medical, consumer and lighting markets. Cinco designs and manufacture industry standard, RoHS compliant, DC-DC converters, AC-DC power supplies and LED power supplies. Altogether Cincon’s catalog exceeds 3,000 standard products. Cincon’s factories have achieved ISO 9001 and 14001 certification.
GME Technology Co., Ltd., established in 1999 and located in Taichung Taiwan, is a supplier of switching power supplies including AC/DC power supply, battery charger and LED driver products. The company's AC/DC power supply, battery charger and LED driver and other power supplies are in accordance with ISO 14001 and ISO 9001 International Quality Management System and ERP Resource Management System. Also, millions of other switching power supplies are sold under its brand name. It provides all kind of OEM/ODM products to fulfill customer needs by research, manufacture and after-sales service, distributing to Japan, America, Europe, Middle East and more.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | CUI Inc |
7.6%
|
| 2 | Mark-10 Corporation |
4.5%
|
| 3 | Shuogong Power |
4.5%
|
| 4 | Sunny Computer Technology Europe, s.r.o. |
4.5%
|
| 5 | FSP TECHNOLOGY INC. |
4.5%
|
| 6 | Li Tone Electronics |
4.5%
|
| 7 | Cell Life Technologies |
3.0%
|
| 8 | Laxmi Remote Private Limited |
3.0%
|
| 9 | UNIFIVE CO., LTD |
3.0%
|
| 10 | GME Technology Co., Ltd. |
3.0%
|
Derivation Method
The ranking is calculated based on the click share within the ac adapter page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
14 | 40.0% |
|
China
|
7 | 20.0% |
|
Taiwan
|
6 | 17.1% |
|
Germany
|
2 | 5.7% |
India
|
2 | 5.7% |
|
Czech Republic
|
1 | 2.9% |
|
United Kingdom
|
1 | 2.9% |
|
Bulgaria
|
1 | 2.9% |
|
Spain
|
1 | 2.9% |
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