How much effect will linear power supplies’ EMI have on machine controls?

April 15, 2015
A machine builder asks about the trade-offs between a switched mode power supply and linear regulated.

We’re trying to save cabinet space by changing from a linear regulated power supply to a switched mode power supply. From what I understand, we’ll get a higher power density with a smaller footprint, while the power factor is about the same. My biggest concern is, with so many devices offering built-in intelligence these days, will a switching power supply create so much electromagnetic interference that it will cause a controls problem on our form, fill and seal machines?

Any mounting recommendations to reduce EMI? What about unregulated? And how close are power supplies to offering their own control capabilities, or is that already available?

Sponsored Recommendations

Covering the basics of choosing the right position feedback option for your application.
This white paper describes advantages of using advanced angle sensor technologies and focuses on best practices for correctly implementing non-­contact and touchless angle sensors...
Learn how Beijer’s X2 extreme HMI thrives in extreme oil & gas environments—this webinar breaks down specs, certifications, and integration strategies for industrial engineers...
NSK integrates advanced automation and drive technologies to deliver high capacity, high speed, ultra-precise indexing and positioning in a compact, flexible linear actuator: ...