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This section provides an overview for dummy loads as well as their applications and principles. Also, please take a look at the list of 16 dummy load manufacturers and their company rankings. Here are the top-ranked dummy load companies as of December, 2024: 1.Palstar, Inc.,, 2.RF Industries, 3.Kintronic Labs, Inc..
Table of Contents
A dummy load is an important tool used primarily in the design and testing of high-frequency circuits.
As the name suggests, it provides a "dummy" load to verify various settings and operations without damaging the actual equipment. The device is used to test a wide variety of equipment, including power supplies, amplifiers, transformers, and, of course, RF (Radio Frequency) related electronics.
Dummy loads can safely absorb the maximum power expected by the equipment and prevent damage due to overloads and overcurrents during the design and testing stages. Dummy loads are also available in a variety of impedance values, allowing the selection of one that meets specific system requirements. The designer or purchasing manager selects the specific dummy load needed to obtain accurate test results.
Thus, dummy loads are an integral part of high-frequency technology and a tool that plays an important role in the design, manufacturing, and maintenance phases of equipment.
The role of dummy loads is utilized in a wide variety of areas of high-frequency technology. The following are some specific examples of its use.
Dummy loads are used as a tool to evaluate whether electronic equipment such as power supply units, amplifiers, transformers, etc. accurately produce the specified output. The ability to safely absorb the output allows one to verify that the equipment can handle the specified load and how well it will perform when a greater load is applied.
Dummy loads are essential for testing and tuning the antennas and transmitters of wireless communications equipment. By simulating the actual communication environment, the transmitting capability and signal quality of the equipment can be evaluated.
Dummy loads are also used to test the ability of a system to adapt to extreme conditions and overloads. This allows one to understand how the system behaves when it encounters an overload condition and to take the necessary protective measures.
The primary function of a dummy load is to absorb energy, especially electrical power, and convert the majority of it into thermal energy. Its basic structure is quite simple, consisting of a conductor for current flow and a resistive material for absorbing that energy and releasing some of it as heat.
The main element, the resistive material, has a specific resistance value and produces a specific voltage drop as current passes through it. This follows Ohm's law (voltage is the product of current and resistance). This resistive element has a specific heat capacity and the ability to convert power into thermal energy.
The design of such a dummy load allows the energy supplied by the electronics to be converted into thermal energy, thus preventing damage to other parts of the system. On the other hand, its heat dissipation capacity determines the degree to which it can absorb the energy to the extent that the equipment must be cooled.
Dummy loads come in a variety of forms and characteristics, each applied to a different application. The following is a detailed description of the main types commonly used.
This is the most common type of dummy load and has the characteristic of having a fixed resistance value. As such, they can accurately simulate the specific load assumed by the device. They are often used for simple testing, adjustment, and verification of rated output.
Variable resistance dummy loads allow the resistance to be manually adjusted to simulate different loading conditions. This allows you to test how the equipment performs under different conditions.
Electronically controlled dummy loads are the most advanced type, allowing the resistance to be varied by computer control. It is used in automated test facilities and advanced diagnostics to see how the system responds to different load conditions.
When large amounts of power must be absorbed, liquid-cooled dummy loads are used to efficiently dissipate the heat generated by the dummy load. They are typically used in high-power applications such as RF transmitters and large power amplifiers.
Each type of dummy load is an essential tool for engineers to ensure that their systems and equipment are functioning properly as they proceed with testing and diagnostics. Each type is suited for a specific use and test environment, and proper selection and use will ensure efficient and accurate results.
*Including some distributors, etc.
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Palstar, Inc. is a manufacturer of amateur radio products established in 1996 and based in Piqua, Ohio, USA. The company primarily produces amateur radio products such as tuners for maximizing the efficiency of your radio communication, and speakers for hearing or amplifying incoming radio transmissions. It also offers related accessories for amateur broadcast and civilian band (CB) radio operations, such as microphones and headphones. The company’s products are mainly used by clients and consumers in the broadcast, DIY, and emergency response sectors.
RF Industries Established in 1979 and based in San Diego, CA, USA, is a manufacturer and supplier of innovative interconnect products. The company's product range includes RF connectors, coaxial and custom cable assemblies, fiber optic cables, wiring harnesses, and Coaxial Connectors and Adapters. These products are essential for the growing and evolving wireless infrastructure. They primarily serve the telecommunications sector, including wireless carriers, infrastructure, and industrial markets. In addition to manufacturing, the company also provides design expertise, cable assembly manufacturing, and specialized connectivity solutions.
Altronic Research Inc., based in Ohio, United States, specializes in the manufacturing of RF coaxial load resistors, commonly known as "dummy loads" or terminations. Established with an aim to excellence, the company caters to sectors such as Telecommunications, Broadcasting, Electronics, Testing, and Aerospace. Its product lineup includes a range of RF coaxial load resistors designed to dissipate RF energy, ensuring accurate testing, signal integrity, and proper functioning of RF equipment. These precision-engineered solutions are indispensable for various applications in industries that rely on accurate and effective RF testing and communication equipment for diverse purposes.
Chengdu Jingxin Microwave Technology Co., Ltd., founded in 2008 and headquartered in Chengdu, Sichuan, China, is a manufacturer and supplier of RF/microwave passive components. The company’s product portfolio includes bandpass filters, directional couplers, power dividers, and multiplexers. These products find applications in 5G and wireless communication, testing and measurement, and medical equipment sectors. The company is devoted to delivering superior RF/microwave passive components that meet customer requirements, and offers services including tailored design and manufacturing, technical support, and training.
Hangzhou CNCR-IT CO., LTD., established in 1999 and based in China, is a manufacturer and supplier of information access solutions. The company's product range includes EOC, Mesh Routers, SD-WAN gateway, and Microwave RF Passive Components, serving various industries such as telecommunications, cable operators, and governments. These products find their applications in designing information access solutions, conducting R&D, manufacturing, and sales of corresponding equipment. As the pioneer in China's information access equipment manufacturing, it aims to simplify data access, enable efficient analysis, and foster convenient data applications.
Borna Electronics, established in 1984 and headquartered in Tehran, Iran, is a manufacturer and supplier of electrical and electronic equipment. The company's product range includes electronic relays, cathodic protection equipment, and corrosion monitoring systems, serving sectors such as oil and gas, power generation, water treatment, marine, and civil engineering. Its services include design, manufacturing, installation, maintenance, and technical support. The company is devoted to delivering quality and creativity, as reflected in its OHSAS 18001:2007, ISO 14001:2004, and ISO 9001:2015 accreditations.
Tocone Co. Ltd. is an ISO 14001:2015-certified manufacturer and distributor of radio frequency (RF) products that was established in 1947 in Tokyo, Japan. The company offers coaxial RF connectors in a range of connector types and sizes, quick adapters for on-the-go measurement operations, and dummy load devices for terminating the end of a transmission line under test. The company’s products are used mainly by its clients in architectural engineering, telecommunication, and audio editing.
American Radio Supply, LLC, , established in 2012 and headquartered near Augusta, Georgia, is a national supplier specializing in radio communication parts and wireless connectivity components. The company offers a diverse range of products, including antennas, dummy loads in specific shapes and sizes, duplexers and triplexers designed for specific metal shapes, a wide range of RF switches, and custom coaxial adapters, with shipping locations across multiple states, including Arizona, California, New York, Ohio, and Washington.
Kintronic Labs Inc., established in 1949 with headquarters in Bluff City, Tennessee, USA, is a distributor, manufacturer, and integrator of broadcast antennas and telecommunication systems. The company's extensive product line includes antenna tuning units, monitoring systems, RF components, short-wave antennas, and equipment racks. The company also offers various equipment and design solutions for AM colocation, custom prefabrication of buildings for telecommunications, and custom transmission tower and transmission line fabrication and installation. The company serves the AM, shortwave, FM, and TV communications markets, among others.
Pasternack, established in 1967 and based in Preston, United Kingdom, is a manufacturer and supplier of electrical solutions and components. Its product portfolio includes audio, visual, cable, lead, connectors, electrical circuits, security CCTV, LED lights, and other tools. The company also offers calibration services, technical support, customer services, and customized solutions. They are used in multiple industries including electrical home appliances, computer, mobiles, power, lighting, telecommunication solutions and other sectors.
Kenbotong Technology Co., Ltd. is an antenna manufacturing enterprise established in 1995 and headquartered in China. The company provides a wide range of antennas for LTE, GSM, CDMA, and Cellular (3G, 4G, and 5G) as well as ISM, TETRA, Wimax, and Wireless LAN frequency bands. Its core products are mainly used in mobile phones, routers, base stations, and other wireless devices. It is ISO 9001-certified and a key player in the global antenna market, with more than US$50 million in annual sales. The company continues to work with multiple industries, including telecommunications, automotive, and industrial.
Agartel Solutions is a provider specializing in technology and communications solutions from India. With a foundation in 2012, the company serves industries such as Telecommunications, Information Technology, Broadcasting, Electronics, and more. Its offerings encompass RF Coaxial Connectors, RF Coaxial Cables, IBS and BTS Installation Accessories, and other related products. These solutions play a role in establishing seamless connectivity, ensuring signal transmission, and optimizing communication networks across applications in industries that demand dvanced technology components for enhanced efficiency.
Telsto Development Co., Limited is a provider specializing in communication solutions. Established in 2012, the company caters to sectors including Telecommunications, Information Technology, Networking, Broadcasting, and Aerospace. Its product portfolio encompasses Antennas, RF Connectors, Cable Assemblies, Network Cabinets, and Signal Boosters. These precision-engineered communication solutions play a role in signal transmission, connectivity, and network optimization across applications in industries that demand robust and efficient communication systems for seamless connectivity and data transfer.
Vgotech India is a supplier of Lab Textile Testing and Quality Control Equipments specializing in precision measuring instruments based in India. With a foundation in 210, the company serves sectors such as Manufacturing, Automotive, Aerospace, Electronics, and Research. Its product range includes Digital Calipers, Micrometers, Height Gauges, Force Gauges, and Hardness Testers. These meticulously crafted instruments are useful to ensuring accurate measurements, quality control, and material testing across applications in industries that prioritize precision, reliability, and advanced metrology solutions on their processes.
Jam Electronic & Shyam Products is a supplier specializing in electronic and product solutions from India. Established in 1997, the company caters to sectors including Electronics, Consumer Goods, Manufacturing, Automotive, and Telecommunications. Its offerings encompass Electronic Components, Consumer Electronics, Industrial Equipment, Automotive Components, and Telecommunication Devices. These meticulously engineered solutions are used in enhancing product functionality, and driving technological advancement across applications in industries that rely on dependable and advanced electronic and product components for various purposes.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Chengdu Jingxin Microwave Technology Co., Ltd |
15.9%
|
| 2 | RF Industries |
11.6%
|
| 3 | Palstar, Inc., |
10.1%
|
| 4 | Kintronic Labs, Inc. |
10.1%
|
| 5 | Vgotech India |
10.1%
|
| 6 | American Radio Supply, LLC |
7.2%
|
| 7 | Altronic Research Inc. |
5.8%
|
| 8 | Agartel Solutions |
5.8%
|
| 9 | Borna Electronics Co. |
4.3%
|
| 10 | Jam Electronic & Shyam Products |
4.3%
|
Derivation Method
The ranking is calculated based on the click share within the dummy load 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 (%) |
|---|---|---|
|
China
|
5 | 45.5% |
|
United States of America
|
3 | 27.3% |
|
India
|
2 | 18.2% |
| Iran | 1 | 9.1% |
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