All Categories
History
This section provides an overview for high frequency power supplies as well as their applications and principles. Also, please take a look at the list of 10 high frequency power supply manufacturers and their company rankings. Here are the top-ranked high frequency power supply companies as of June, 2025: 1.DAIHEN Corporation, 2.Ujwal Electronics, 3.NWL, Inc..
Table of Contents
A high frequency power supply is a power supply that outputs a constant voltage with a frequency ranging from several kHz to several hundred kHz.
Power supply types are classified according to their switching elements, with some using transistors and others using vacuum tubes. The vacuum tube method has been used for a long time and uses a large transmitter tube and transformer, so the size of the power supply is large.
On the other hand, the method using transistors has recently seen the development of inverters that use elements called MOSFETs, and the advantages are smaller size and higher power supply output efficiency. High frequency power supply is mainly used to heat objects using a method called induction heating.
Industrial applications include quenching, ERW pipe welding, thin steel plate heating, plasma generation, and cleaning.
High frequency power supplies are used to generate eddy currents to heat objects in high frequency induction heating. Specific applications are as follows:
Used in semiconductor and LCD manufacturing, MEMS manufacturing, solar cell manufacturing, plasma cleaning, steel and forging industries. It is also increasingly used in the new materials industry, food manufacturing, building materials manufacturing, wood drying, medical thermotherapy, electronics, automotive, vinyl fusion, and other industrial fields.
High frequency power supplies for plasma generation excite plasma by means of a high frequency electric field, thereby heating the ions and electrons that form the plasma. By irradiating the surface of polymer materials and other materials, they can be used to select the type of functional group and control the radical species on the surface, which is also used in the development of functional materials.
To generate a high frequency power supply, the input AC power supply must be converted once to DC, passed through an inverter, and then converted again to AC. First, the AC power supply is converted to DC using bridge diodes.
A bridge diode is an element consisting of six diodes connected in a bridge. By inverting the negative voltage side of the AC power supply, a DC voltage can be output. Next, the DC voltage is converted to a square wave using a switching element, and this square wave is connected to a matching transformer.
The voltage is then converted according to the number of transformer windings, and finally converted to AC power in a resonant circuit.
High frequency power supplies (inverters) are classified according to their switching elements.
Thyristors are used as the oscillator element. They are suitable for commercial power supply frequencies up to 10 kHz and high voltages, and have a large element.
Suitable for small oscillators 500W to 2kW. The element is small and is used for handy types, etc.
GBT stands for "Insulated Gate Bipolar Transistor." The elements are large and suitable for high-current applications and series resonance circuits. The frequency range is: 10kHz to 50kHz, for high output.
MOSFET stands for "Metal-Oxide-Semiconductor Field Effect Transistor." It is suitable for high-frequency applications and is smaller than other devices. Frequency range is 100kHz to 400kHz, so it is not suitable for high output power.
Vacuum tubes are suitable for high-frequency applications, self-excited oscillation type with frequencies ranging from 100 kHz to 10 MHz. They use a large transmitter tube and a large transformer, so the equipment becomes larger.
1. Voltage Control
This control method uses thyristors or other elements to suppress DC voltage. It is suitable for quenching because the frequency is fixed and the current penetration depth can be fixed.
The circuit is complex and expensive because of the need for flattening with a power supply capacitor.
2. Current Control
On the oscillator side, the output current value is constant because the frequency is varied by automatically adjusting the load resistance to match the indicated current value. Therefore, the oscillator frequency is always changing.
3. Power Control
The input power value is calculated by multiplying the voltage and current value of the DC section. The output is then controlled with respect to the indicated value.
4. PWM Control
This is a control method found in small oscillators. It is a control method in which the pulse width (duty ratio) is varied while the period remains constant.
*Including some distributors, etc.
Sort by Features
Sort by Area
Incorporated in 1965, Analog Devices, Inc. designs, manufactures, tests, and markets integrated circuits (ICs), software, and subsystems that leverage analog, mixed-signal, and digital signal processing technologies. The company provides data converter products, power management and reference products for power conversion, driver monitoring, sequencing, and energy management applications in the automotive, communications, industrial, and high-end consumer markets. In addition, the company provides digital signal processing and system products for high-speed numeric calculations. It serves clients in the industrial, automotive, consumer, instrumentation, aerospace, and communications markets.
NWL, Inc. is an American manufacturer of transformers and power supplies that was originally founded as the Newell Manufacturing Company in 1933 before rebranding in 1991. Based in Bordentown, New Jersey, the company produces industrial- as well as military-spec transformers and inductors, electrostatic precipitators (ESPs), and power supplies. It also offers tech support, spare parts, repair and field services to customers in need of additional support. NWL products and services are used primarily by clients in the electrical, utilities, infrastructure, and military sectors.
Stangenes Industries, Inc. started in 1974 and is headquartered in Palo Alto, California. The company is a manufacturer of magnetic cores and transformers used in the medical and research industries and various military applications. Customers include the United States Department of Energy as well as research facilities such as CERN and DESY in Europe and KEK in Japan. Transformers are the company’s primary product including pulse, isolation, current, and general transformers. The company also produces electromagnets, pulse modulators, power supplies, and magnetic cores.
AMADA WELD TECH is a subsidiary of AMADA WELD TECH Co., LTD, which was founded in 1972. AMADA is based in Southern California and is a manufacturer of equipment and systems for resistance welding, hot bar bonding, laser marking, and other laser cutting services for industries such as aerospace, automotive, electronics, medical, and photonics. AMADA is ISO 9001:2015 certified. Examples of AMADA products include machines and systems for resistance welding, laser cutting, hermetic steam sealing, laser micromachining, and more.
DAIHEN Corporation, established in 1919 and headquartered in Osaka, Japan, is a manufacturer of Power Products, Industrial Robots, and RF/MW Generators & Automatic Matching Units for plasma applications. The company provides an extensive array of products, including Oil-immersed Transformer, Cast Resin Transformer suitable for high buildings, public facilities, and hospitals, Power Distribution Equipment such as closed type power distribution boards and remote monitoring systems, as well as Sensors for Robot Welding and Positioners & Sliders. The company also offers various welding & cutting machines, including TIG Welding Machines, Plasma Cutting Machines, as well as Peripheral Devices for Welding.
General High Voltage Ind. Ltd, founded in Shropshire, the UK, in 1991 is a manufacturer of high voltage power supplies. The company's product portfolio includes Electron beam welding machines, Industrial X-ray PSUs, Capacitor charging PSUs, Laser PSUs, and Electrostatic precipitators. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. They also provide equipment repair, instrumentation system upgrades, and retrofits, and preventive maintenance.
Ujwal Electronics was established in 2010 and is based in Pune, India is a manufacturer and supplier of electronic instrumentation and automation products. The company’s product portfolio includes control panels, high voltage power supplies, high voltage transformers, lightning arrester testers, DC drives, and more. The electrical goods and accessories have been specifically developed to cater to a range of industrial applications and research endeavors. The goods find use across several industries like metal manufacturing, automotive, aerospace, jewelry, and electronics. These products are designed with an effort on optimizing energy efficiency and ensuring adherence to environmental regulations.
Zhongshan Haocheng Automation Equipment Co. Ltd., founded in 2009 and located in Zhongshan City, Guangdong Province, is a manufacturer, supplier, and researcher of industrial electrical equipment. The company supplies high-frequency lithium battery forklift chargers, industrial vehicle chargers, silicon oxide machines, hard oxidation power supplies, and car DC-DC converters. These products are used in battery charging, complex oxidation, electroplating production, and aluminum oxidation. In 2019 the company participated in the development of CCMA standards.
Ranking as of June 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | NWL, Inc. |
14.9%
|
| 2 | Stangenes Industries, Inc. |
14.9%
|
| 3 | DAIHEN Corporation |
14.9%
|
| 4 | Ujwal Electronics |
12.8%
|
| 5 | General High Voltage Ind. Ltd |
12.8%
|
| 6 | Analog Devices, Inc. |
10.6%
|
| 7 | Zhongshan Haocheng Automation Equipment Co., Ltd. |
8.5%
|
| 8 | AMADA WELD TECH INC. |
6.4%
|
| 9 | EverExceed Industrial Co., Ltd |
4.3%
|
Derivation Method
The ranking is calculated based on the click share within the high frequency power supply page as of June 2025. 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
|
4 | 50.0% |
|
Japan
|
1 | 12.5% |
|
United Kingdom
|
1 | 12.5% |
|
India
|
1 | 12.5% |
|
China
|
1 | 12.5% |
64 products found
64 products
Pulsed Power Japan laboratory ltd
270+ people viewing
Last viewed: 15 hours ago
Ideal for long-term stable plasma generation. The applications are endless. ■Applications ・Engine combustion assist ・Fast decomposition of Nox a...
Sanki Dengyo Co., Ltd.
260+ people viewing
Last viewed: 1 day ago
◼︎Product overview Two furnaces, a vacuum furnace and an atmospheric furnace, can be switched from one high-frequency power supply panel. We have e...
Sanki Dengyo Co., Ltd.
270+ people viewing
Last viewed: 1 day ago
◼︎Product overview Two furnaces, a vacuum melting furnace and a continuous casting tester for melting light metals such as Mg, can be switched from...
Sanki Dengyo Co., Ltd.
290+ people viewing
Last viewed: 20 hours ago
◼︎Product overview Heat treatment furnaces mainly perform technology in the furnace that heats and cools metal materials to improve their propertie...
Sanki Dengyo Co., Ltd.
310+ people viewing
Last viewed: 8 hours ago
◼︎Product overview Heat treatment furnaces mainly perform technology in the furnace that heats and cools metal materials to improve their propertie...
Senecom Co., Ltd.
220+ people viewing
Last viewed: 19 hours ago
Pulsed Power Japan laboratory ltd
230+ people viewing
Last viewed: 8 hours ago
This high voltage pulse power supply uses a particularly high voltage, large current, and high speed element among MOS-FETs to generate extremely h...
Wedge Co., Ltd.
1120+ people viewing
Last viewed: 5 hours ago
■Corona discharge surface treatment About the special high frequency power supply CTW series The special high-frequency power supply CTW series is ...
10 models listed
Japan Koshuha Co., Ltd.
250+ people viewing
Last viewed: 10 hours ago
Microwave power supply using PLL oscillator and transistor amplification method. ■Features - Excellent stability in oscillation frequency, oscilla...
Japan Koshuha Co., Ltd.
210+ people viewing
Last viewed: 1 day ago
This device is a 915MHz microwave power source that uses an electromagnetic magnetron. There are types with a maximum output of 5kW and 30kW, and t...
Japan Koshuha Co., Ltd.
230+ people viewing
Last viewed: 1 day ago
This is an all solid state high frequency power supply for plasma generation for semiconductor manufacturing equipment and liquid crystal manufactu...
Japan Koshuha Co., Ltd.
170+ people viewing
Last viewed: 1 day ago
■For large loads (Frequency: approx. 400kHz) This device is a vacuum tube type induction heating power supply. Outputs range from 2kW to 100kW. Sui...
Japan Koshuha Co., Ltd.
180+ people viewing
This is an all solid state high frequency power supply. The oscillator uses a crystal oscillation method, and is designed to be compact and highly ...
Japan Koshuha Co., Ltd.
160+ people viewing
This is an all solid state high frequency power supply. The oscillator uses a crystal oscillation method, and is designed to be compact and highly ...
Japan Koshuha Co., Ltd.
190+ people viewing
Last viewed: 11 hours ago
This device is an all-solid-state microwave power supply that can ensure highly stable output even at 2,450MHz. The output can be CW or pulse modul...
Japan Koshuha Co., Ltd.
310+ people viewing
Last viewed: 1 day ago
This is an all solid state high frequency power supply for plasma generation for semiconductor manufacturing equipment and liquid crystal manufactu...
Japan Koshuha Co., Ltd.
260+ people viewing
Last viewed: 17 hours ago
This equipment is a microwave power supply essential for semiconductor manufacturing such as microwave plasma CVD and microwave ECR plasma. We have...
Japan Koshuha Co., Ltd.
210+ people viewing
Last viewed: 1 day ago
Pulse-modulated microwave plasma is showing promise for microfabrication of semiconductor wafers. In response to this demand, we have developed a h...
Japan Koshuha Co., Ltd.
220+ people viewing
Last viewed: 3 hours ago
In the microwave transmission path for 2,450MHz microwave plasma discharge, etc., the load impedance fluctuates due to load fluctuations, and if th...
Japan Koshuha Co., Ltd.
180+ people viewing
Last viewed: 14 hours ago
This is a waveguide automatic matching device for 2,450MHz microwave. Automatically matches the impedance of the transmission line and load at high...
Japan Koshuha Co., Ltd.
160+ people viewing
Last viewed: 5 minutes ago
This system is a 2,450MHz band high-output microwave power supply that enables magnetron oscillation with extremely high stability. 2.45GHz microwa...
Japan Koshuha Co., Ltd.
180+ people viewing
This is an all solid state high frequency power supply for plasma generation for semiconductor manufacturing equipment and liquid crystal manufactu...
JS Giken Co., Ltd.
150+ people viewing
Last viewed: 1 hour ago
This product is a high frequency power supply device designed as an energy source for plasma generation, etc. The crystal oscillator and output sta...
JS Giken Co., Ltd.
170+ people viewing
Last viewed: 39 minutes ago
This machine is a high frequency power supply designed for industrial use as well as plasma generation. The rated output is 13.56MHz 300W, and the ...
JS Giken Co., Ltd.
150+ people viewing
Last viewed: 7 hours ago
This machine is a 13.56MHz/1kw high frequency power supply developed for semiconductor plasma and sputtering applications. It also has a built-in p...
Mitsubishi Electric Engineering Co., Ltd.
110+ people viewing
Features ■All-in-one automatic matching function and power monitoring function Built-in protection function against excessive reflected power ・6.7...
