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kasus perusahaan Tentang EMC Case Study: Conducted Emissions Fix for Fitness Equipment

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Miss. Vicky Lee
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EMC Case Study: Conducted Emissions Fix for Fitness Equipment

2026-04-07

Product: Fitness Equipment

Standard: EN 55032

Issue: Conducted emissions (Average values above limit below 1 MHz)

Initial Findings

  • Filter 0607 already installed
  • Swapped power board and control board — no improvement
  • Breakthrough: Disconnected earth ground → emissions disappeared

Root Cause:

Noise was coupling onto the ground line and radiating back into the measurement.

The Solution

Extended the ground cable and added a Mn-Zn ferrite core (VMETG-025015015-100):

Configuration Result
Mn-Zn, 4 turns ✅ Pass with margin
Other ferrite types Suboptimal
Fewer turns Insufficient attenuation

Final fix: Mn-Zn ferrite, 4 turns on extended ground line.

19925448748
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Kamar 1301, Blok B, Rongchao New Times Plaza, Taman Industri Teknologi Tinggi Guanlan, Distrik Longhua, Shenzhen, Tiongkok

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86-0755-29170376

19925448748
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