Company lists · Data refreshed September 2026
Top 25 High voltage power supply manufacturers worldwide
RevenueBase identified 264 high voltage power supply manufacturers worldwide as of September 2026 and tracks 5,389 professional contacts across them, including 1,590 with verified work emails. The United States is the largest market and San Diego the largest hub.
This list covers high voltage power supply manufacturers worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 30, 2026. Country and city lists for high voltage power supply manufacturers follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest high voltage power supply manufacturers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 851 contacts → | ||||
Strong evidence “Spellman High Voltage Electronics Corporation is the world's leading independent manufacturer of DC high voltage power supplies, x-ray generators and Monoblock® X-ray sources.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 2 | 805 contacts → | ||||
Strong evidence “We are committed to being a leading provider of power solutions, including AC-DC power supplies and DC-DC converters, high voltage power supplies and RF power supplies.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 3 | 197 contacts → | ||||
Strong evidence “We specialize in power supply within the voltage range 0.4-400 kV.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 4 | 177 contacts → | ||||
Indirect evidence “NWL Inc.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 5 | 169 contacts → | ||||
Strong evidence “Magna-Power designs and manufactures robust programmable power products in the USA that set industry standards for quality, size, and control.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 6 | 148 contacts → | ||||
Strong evidence “HIGHVOLT Prüftechnik Dresden GmbH is a global leader in high voltage and high current test systems and measurement equipment with experience of 120 years.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 7 | 103 contacts → | ||||
Strong evidence “With a rich legacy of expertise and innovation, ScandiNova Systems (ScandiNova) has established itself as a world leader in the development and production of high-voltage pulsed…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 8 | 89 contacts → | ||||
Indirect evidence “Contamos con infraestructura, equipos y personal especializado en cada línea de servicio, hacemos extensiva la garantía del fabricante a través de nuestro personal certificado por…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 9 | 83 contacts → | ||||
Strong evidence “FARAMAX is a manufacturer of high voltage power transformers, shunt reactors and magnetically controlled shunt reactors (MCSR).” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 10 | 79 contacts → | ||||
Strong evidence “KVTEK designs and manufactures technically advanced and easy to use products for High Voltage, High Current and High Power test systems and measurement instruments.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 11 | 73 contacts → | ||||
Strong evidence “REGATRON power supplies are backed by more than 50 years of experience in power electronics.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 12 | 69 contacts → | ||||
Indirect evidence “In 2024, EA Elektro-Automatik Group (EA) joined Tektronix as part of its test and measurement portfolio.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 13 | 66 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 14 | 57 contacts → | ||||
Indirect evidence “Spannung in Präzision Die J.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 15 | 57 contacts → | ||||
Strong evidence “Since 2008, VJ X-Ray has designed and manufactured integrated x-ray sources and high voltage generators for OEMs of X-Ray Inspection Systems in markets including Security, Food &…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 16 | 57 contacts → | ||||
Strong evidence “Dean Technology, Inc is an ISO 9001:2015 certified company that specializes in the manufacture, distribution and support of high voltage and high power diodes, power supplies…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 17 | 49 contacts → | ||||
Strong evidence “Voltage Multipliers Inc.(VMI) manufactures high voltage diodes, optocouplers, multipliers, rectifiers, and power supplies.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 18 | 44 contacts → | ||||
Strong evidence “PHENIX Technologies Inc, A Division of Doble Engineering, designs and manufactures a wide range of High Voltage, High Current, and High Power Test Systems and Components.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 19 | 38 contacts → | ||||
Strong evidence “Ampegon Power Electronics AG designs and delivers high-power RF, high-voltage, and pulsed power systems, as well as transmitters for the world’s most demanding scientific…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 20 | 37 contacts → | ||||
Strong evidence “Gulmay specialises in the design and manufacture of high frequency, high power generators and controls for use in industrial x-ray applications.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 21 | 37 contacts → | ||||
Strong evidence “High Voltage Engineering Solutions, from conceptual design, through to installation and O&M.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 22 | 33 contacts → | ||||
Strong evidence “High Voltage Specialists” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 23 | 33 contacts → | ||||
Strong evidence “High Voltage Technology SA (Pty) Ltd (“HVT”) provides “Can do” solutions for tough problems in the electricity transmission & distribution industry.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 24 | 30 contacts → | ||||
Partial evidence “OCEM Power Electronics creates power systems for premier research laboratories around the world.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 25 | 29 contacts → | ||||
Strong evidence “Founded in 1991, Adelsystem designs and manufactures industrial power supplies with linear and switching technology.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: high voltage power supply manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names high voltage power supply manufacturers.
- Partial evidence
- Its own public description names part of high voltage power supply manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name high voltage power supply manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 264 high voltage power supply manufacturers worldwide
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High voltage power supply manufacturers worldwide at a glance
As of Sep 30, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among high voltage power supply manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for high voltage power supply manufacturers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “high voltage power supply manufacturers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names high voltage power supply manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among high voltage power supply manufacturers, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 1,590 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 30, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
High voltage power supply manufacturers by location
2 lists · largest firstEvery High voltage power supply manufacturers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names high voltage power supply manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many high voltage power supply manufacturers are there worldwide?
RevenueBase identified 264 high voltage power supply manufacturers worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Spellman High Voltage Electronics Corporation, headquartered in Hauppauge, tops this list with the largest team on record.
Which country has the most high voltage power supply manufacturers?
The United States leads with 58 companies, followed by Germany (26). Every high voltage power supply manufacturers list by country and city is linked on this page.
Which city has the most high voltage power supply manufacturers?
San Diego leads with 5 headquartered companies, followed by Shenzhen (5) and Xian (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,590 verified decision-maker contacts tracked across these 264 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 30, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.