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.
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.


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