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This section provides an overview for ac millivoltmeters as well as their applications and principles. Also, please take a look at the list of 13 ac millivoltmeter manufacturers and their company rankings. Here are the top-ranked ac millivoltmeter companies as of May, 2025: 1.NSCA TRA-CAL, 2.AMBALA ELECTRONIC INSTRUMENTS, 3.LANGLOIS.
Table of Contents
An AC millivoltmeter is a device used to measure AC voltage supplied from an AC power source.
In the past, many portable AC millivoltmeters were sold with only the function of an AC millivoltmeter, but in recent years, most AC millivoltmeters have been used as testers with multiple functions. There are two types of multifunctional products: analog testers and digital testers.
Analog testers have relatively low internal resistance, minimizing power loss. They also have the advantage of high accuracy and low measurement error.
Digital testers have high internal resistance and can measure circuits with high impedance.
AC millivoltmeters are widely used in product inspection, maintenance, and preservation where AC current is used.
The following are examples:
By using AC millivoltmeter, it is possible to identify the inherent voltages between electronic circuits.
As mentioned above, AC millivoltmeter is also used to monitor equipment voltage conditions.
AC millivoltmeters can be broadly classified into two types: analog and digital.
Analog voltmeters mainly use the moving-piece method.
In the movable iron strip type, an input voltage is applied to a fixed coil, and the magnetic force generated in the coil moves the iron strip to oscillate the pointer. It is characterized by its simple structure and low cost.
The principle of a digital millivoltmeter is it first converts the input AC voltage to DC power via an AC/DC converter. The electrical resistance is then determined by the multiplier, and the amount of current flowing through the AC millivoltmeter is determined by the voltage of the bias current and the voltage of the AC millivoltmeter intrinsic resistance. With the electrical resistance and current determined, Ohm's law can be used to determine the voltage.
As mentioned earlier, there are two types of AC millivoltmeters: analog and digital. Data loggers for logging voltages are also available.
Many people think of analog AC millivoltmeters when they hear the words "AC millivoltmeter. The most common type has a voltage plate and needle covered by a transparent acrylic cover on the front. Because of its simple structure, it is less prone to failures and more reliable than a digital AC millivoltmeter.
They are relatively inexpensive, and some are available on mail order sites for less than 10 dollars.
This type of voltmeter has a digital display on the front panel to indicate voltage. It has a control board such as FPGA inside and has functions such as an analog-to-digital conversion circuit.
The digital display is easy to read, and some are highly functional because various functions can be realized by the program that controls the board.
The price range varies from those priced in the 1o USD range to high-performance models, costing several thousand dollars.
Compared to analog, the structure is more complex, so the failure rate tends to be higher.
A data logger is a type of device that has the function of an AC millivoltmeter and can simultaneously log the results of voltage measurements and perform various measurements, such as temperature, by connecting an expansion unit.
It is a type of device that can simultaneously perform various measurements, such as temperature, by connecting an expansion unit.
*Including some distributors, etc.
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Established in 1971, Ambala Electronic Instruments is a reputable manufacturer and supplier of precision laboratory instruments and equipment located in India. The company specializes in producing a diverse range of scientific instruments for various applications in research, education, and industry. Ambala Electronic Instruments offers a wide array of products, including laboratory ovens, incubators, shakers, and analytical balances. These instruments cater to the needs of laboratories, educational institutions, and industrial facilities, ensuring accurate and unfailing results in experiments and processes. Their devotion to quality and innovation has positioned them as an esteemed partner in the scientific community.
Changzhou Tonghui Electronic Co. Ltd. is a manufacturer of electronic testing and measurement instruments founded in 1994 and based in Changzhou, Jiangsu, China. The company produces equipment used for testing and measurement processes, and related accessories. Its products include capacitance meters, insulation testers for electrical safety compliance testing, and automatic semiconductor test systems. It also offers data loggers, power supply units, and test leads. The company's products are mainly used by clients in the microelectronics, semiconductor, and defense sectors.
GW Instek or Good Will Instruments is a Taiwanese instrument maker founded in 1975. GW Instek has over 300 product lines, which include Oscilloscopes, Spectrum Analyzers, Signal Sources, Basic Tests and Measurement Instruments, Safety Monitoring Systems, and more. Leading manufacturers choose them as their test and measurement provider. GW Instek has become the leading brand in the electronic test and measurement industry. They help electronic industries reduce testing costs and increase competitiveness. GW Instek has subsidiaries in five countries and is sold to more than 80. Their mission is to reduce total costs and create customers value from cost savings.
Shijiazhuang Suin Instruments Co., Ltd., located in Shijiazhuang, Hebei, China, and founded in 1996, is a manufacturer of test & measurement instruments, electrical products, and application software. Its product portfolio includes signal generators, spectrum analyzers, frequency counters, power quality analyzers, and programmable DC power supplies. These products cater to a wide range of applications within the test & measurement industry, such as electronic circuit analysis, telecommunications signal analysis, frequency measurement, power quality assessment, and precise control of DC power supplies.
NF Corporation was founded in 1959 and is headquartered in Yokohama, Japan. The company serves automobile, clean energy technologies, aerospace, and digital appliance industries. The ISO 9001 and ISO 14001 certified company combines a vertically integrated approach of development, engineering, manufacturing, sales, and field services. The company’s product segments include function modules, electric measurement instruments, and power supply and control products. The company also builds customized products for customers including EMC testing systems, lithium-ion battery charging and discharge testing systems, and bipolar power amplifiers.
Langlois established in 1975 and headquartered in Gradignan Cedex, France, is a manufacturer and supplier of electrical laboratory equipment, and furniture. The company’s product portfolio is segmented into electrical accessories, measuring apparatus, educational solutions, electrotechnics, and wiring solutions. The measuring apparatus for example comprises oscilloscopes, clamp meters, probes, spectrum analyzers, and installation testers. It also offers customized products made to measure according to the customer’s specifications. The company offers products used in laboratories, educational institutions, production workshops, photovoltaic & wind energy, and the power industry.
Ranking as of May 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | NSCA TRA-CAL |
19.6%
|
| 2 | AMBALA ELECTRONIC INSTRUMENTS |
14.7%
|
| 3 | LANGLOIS |
9.8%
|
| 4 | Good Will Instrument Co., Ltd |
9.8%
|
| 5 | China Educational Instrument & Equipment Corp. |
7.8%
|
| 6 | Changzhou Tonghui Electronic Co. Ltd. |
7.8%
|
| 7 | NF Corporation |
7.8%
|
| 8 | Shijiazhuang Suin Instruments Co., Ltd. |
6.9%
|
| 9 | TESTONIK |
3.9%
|
| 10 | SES INSTRUMENTS PVT. LTD. |
3.9%
|
Derivation Method
The ranking is calculated based on the click share within the ac millivoltmeter page as of May 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 (%) |
|---|---|---|
|
China
|
3 | 37.5% |
|
Japan
|
2 | 25.0% |
|
United States of America
|
1 | 12.5% |
|
India
|
1 | 12.5% |
|
Taiwan
|
1 | 12.5% |
56 products found
56 products
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Yagyu Shokai Co., Ltd.
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