15 High Frequency Power Supply Manufacturers in 2022
This section provides overview, applications, and principles of high frequency power supplies. Also, please take a look at the list of 15 high frequency power supply manufacturers and their company rankings.
Table of Contents
What Is a High-Frequency Power Supply?
A high-frequency power supply is a power supply that outputs a constant voltage with a frequency ranging from several kilohertz to several hundred kilohertz.
Types of power supplies are classified according to switching elements, with some using transistors and others using vacuum tubes. The latter has been used for a long time and uses large transmitting tubes and transformers, which makes the size of the power supply larger. On the other hand, in the method using transistors, the development of inverters utilizing elements called MOSFETs has progressed in recent years, resulting in smaller sizes and higher power supply output efficiency.
Generally, it is used in a method called induction heating, where the eddy currents generated in the object to be heated can be created by controlling the current flowing in the coil.
Uses of High-Frequency Power Supplies
High-frequency power supplies are essential for generating eddy currents to heat objects in high-frequency induction heating (see the section on high-frequency induction heating equipment).
Using the principle of induction heating, high-frequency power supplies have long been used in plasma heating. By exciting a plasma with a high-frequency electric field, the ions and electrons that form the plasma can be heated. This method of creating plasma is also called high-frequency discharge.
It is also used in the development of functional materials by selecting the type of functional group and controlling the radical species on the surface by irradiating the surface of polymer materials and other materials.
Principle of High-Frequency Power Supplies
To generate a high-frequency power supply, the input AC power is converted once to DC, passed through an inverter, and then converted again to AC. Let's take a look at the details of this process.
First, three-phase AC power is often used and is converted to DC using bridge diodes. A bridge diode is an element consisting of six diodes connected in a bridge. A DC voltage can be output by inverting the negative voltage side of the AC power supply.
The DC voltage is converted to a square wave using a switching element. Transistors and vacuum tubes are used as switching elements. Those using transistors include thyristors, bipolar transistors, and MOSFETs.
On the other hand, the method using vacuum tubes uses large transmitter tubes and transformers. The square wave converted here is further converted to AC power in a matching transformer, where the voltage is converted according to the number of transformer windings and finally converted to AC power in a resonant circuit.
List of 15 High Frequency Power Supply Manufacturers
*Including some distributors, etc.
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General High Voltage Ind. Ltd
High Frequency Power Supply
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Ujwal Electronics
High Frequency High Voltage Power Supply
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High Frequency Power Supply Manufacturer Ranking
*Including some distributors, etc.Number of Employees
- XP Power: 2,341
Newly Established Company
- XP Power: 1988 (35 years ago)
- Analog Devices, Inc.: 1965 (58 years ago)
Company with a History
- Analog Devices, Inc.: 1965 (58 years ago)
- XP Power: 1988 (35 years ago)
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