More than Power Supplies & EMI/EMC Filters

With more than 60 years of experience as a Power Supply and EMI Filter manufacturer, our team can provide unmatched engineering support to take your product from design to production.

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HermesFlex™ New Output Ranges: 12V and 1000V Now Available

HermesFlex™ now offers 1–12V and 80–1000V programmable output options, providing precise control and high-voltage capability for a broad range of test, medical, and industrial applications—all within a compact 1U design.

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AC/DC Power Supplies

Astrodyne TDI’s offers a wide selection of highly reliable AC-DC power supplies.

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DC/DC Power Supplies

Explore our in-house designed DC-DC power supplies and converters.

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EMI/EMC Filters

Discover our large selection of standard and custom EMI/EMC and RF filters.

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Uninterruptible Power Supplies

Critical applications demand reliable up-time. Learn more about our seamless backup power solutions.

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Loads

Astrodyne TDI high-voltage electronic loads are highly versatile, programmable and feature-riched.

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Power Supplies By Coolant Type

High voltage power supplies require highly effective cooling solutions.

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Custom Solutions at Astrodyne TDI

A variety of technical requirements can prevent you from finding the perfect off-the-shelf solution. At Astrodyne TDI we have the advanced tools and technology to design and modify power supplies and EMI filters to meet your unique requirements.

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On-Demand Training

Power Solutions for Medical System Designs

Join our webinar to learn about selecting power supplies, EMI filters, and toroidal transformers for medical systems. Gain insights into Electromagnetic Compatibility (EMC) and safety requirements to enhance device performance and safety. Ideal for engineers, product managers, and decision-makers in medical technology.

Semiconductor Capital Equipment Power

Conforming to SEMI F47 Voltage Sag Tolerance

Power supplies used in semiconductor manufacturing equipment are generally required to conform to the SEMI F47-0706 voltage sag tolerance standard. These standard details the conditions under which a power supply must continue to operate in the event of a temporary degradation of its single-phase AC input voltage level. (SEMI F47 does not apply to three-phase input power supplies.)

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Applications

Astrodyne TDI delivers power and EMI filter solutions to a diverse array of markets and industries world-wide.

Healthcare

Astrodyne TDI understands the critical components of medical devices and can deliver highly reliable power and EMI filter solutions that meet their needs.

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Semiconductor Fab Equipment

Astrodyne TDI is the leading provider of power solutions for various semiconductor equipment applications worldwide.

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Industrial

Deliver safety and reliability throughout the testing and assembly process — browse our selection of industrial solutions.

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Pro-Grade Consumer Appliances

Astrodyne TDI is committed to providing you with durable, economical EMI filter and power solutions that will fit all your appliance needs.

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Military & Aerospace

Astrodyne TDI offers an extensive array of COTS power supplies and EMI Filters designed to meet stringent MIL-standard and aerospace specifications.

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Astrodyne TDI News and Blog Posts

Blog | Sep 16, 2025

The Critical Role of Current Transformers in Utility Equipment

In today’s industrial and utility environments, the demand for safe, reliable, and digital-ready power equipment has never been greater. Whether it’s ensuring up time for critical operations or ...

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Blog | Aug 11, 2025

The Importance of SEMI F47 Compliance in Semiconductor Manufacturing

Voltage sags are an incredibly disruptive power quality issue facing semiconductor manufacturing. They are the power quality disturbance with the highest economic losses for commercial, microgrid and ...

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BLOG | June 24, 2020

3-Phase Power: Delta vs Wye Explained

Three-phase power plays a key role in the design of electrical systems, and 3-phase EMI filters are an important part of the electrical devices in different markets, primarily in heavy-duty industrial applications.

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