New Blog Post by Keith Armstrong: A useful solution to the EMC / SAFETY compromise when filtering AC mains
16 Apr 2025
We’re excited to share a new blog post from Keith Armstrong, now live on EMC Standards.
Preview:
Summary:
Keith discusses how best to deal with the safety risks of using high-value Y-rated safety capacitors.
• Problem – CM emissions versus Safety Risks:
High values of Y-capacitors can reduce conducted common-mode (CM) emissions but can also lead to hazardous levels of mains leakage currents, increasing the risks from electric shocks and tripping safety devices.
• Solution – Better understand CM current paths:
Conducted common-mode emissions measured at the mains inlet can be suppressed at various points along the noise current loop, not merely at the AC mains inlet alone. Reducing size and cost without increasing mains leakage currents.
Read the full blog here: A useful solution to the EMC / SAFETY compromise when filtering AC mains
Don't Miss EMC & Compliance International 2025
If you find Keith’s writing valuable, come meet him and other leading experts at EMC & CI 2025, taking place from 19th–21st May 2025 in Oxford. This is your chance to gain hands-on knowledge, attend expert-led sessions, explore the latest in EMC technology—and maybe even discuss blog topics like this one in person!
Use code EMCSTANDARDS30 at checkout to receive 30% off your ticket.
Tickets and info: www.emcandci.com
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