# EMC Troubleshooter Min Zhang on Measuring Ground w/ Voltage & Current

- Show: [OnTrack](https://hardwarepodcasts.com/podcast/ontrack)
- Published: 2024-05-07
- Length: 41m
- Episode: 265
- Page: https://hardwarepodcasts.com/podcast/ontrack/2024-05-07-emc-troubleshooter-min-zhang-on-measuring-ground-w-voltage-current
- Listen: https://podcast.altium.com/e/emc-troubleshooter-min-zhang-on-measuring-ground-w-voltage-current/

## Summary

EMC troubleshooting expert Min Zhang, founder of Mach One Design, joins host Zach Peterson to discuss techniques for measuring ground potential differences in electronic systems. Zhang details the limitations of standard voltage probes in high-frequency applications and introduces specific tools like the Unifil SMMS series for high-power transient measurements. He also explains current-based measurement methods, including homemade resistive probes and RF surface current probes, to accurately diagnose noise in high-power systems like electric vehicles.

## Chapters

- [0:00](https://hardwarepodcasts.com/podcast/ontrack/2024-05-07-emc-troubleshooter-min-zhang-on-measuring-ground-w-voltage-current#t=0) Introduction and EMC and Compliance International Event
- [5:25](https://hardwarepodcasts.com/podcast/ontrack/2024-05-07-emc-troubleshooter-min-zhang-on-measuring-ground-w-voltage-current#t=325) Voltage Measurement Techniques and Probe Limitations
- [12:21](https://hardwarepodcasts.com/podcast/ontrack/2024-05-07-emc-troubleshooter-min-zhang-on-measuring-ground-w-voltage-current#t=741) High-Power Voltage Measurement with Unifil SMMS
- [19:52](https://hardwarepodcasts.com/podcast/ontrack/2024-05-07-emc-troubleshooter-min-zhang-on-measuring-ground-w-voltage-current#t=1192) Current Measurement via Antenna Coupling
- [24:51](https://hardwarepodcasts.com/podcast/ontrack/2024-05-07-emc-troubleshooter-min-zhang-on-measuring-ground-w-voltage-current#t=1491) Resistive and Surface Current Probes for Troubleshooting
- [33:15](https://hardwarepodcasts.com/podcast/ontrack/2024-05-07-emc-troubleshooter-min-zhang-on-measuring-ground-w-voltage-current#t=1995) Common Mode Noise in High-Power Applications
- [38:37](https://hardwarepodcasts.com/podcast/ontrack/2024-05-07-emc-troubleshooter-min-zhang-on-measuring-ground-w-voltage-current#t=2317) Conference Speakers and Closing

## Topics

- [Test & measurement](https://hardwarepodcasts.com/topic/test-and-measurement)
- [Debugging & failure analysis](https://hardwarepodcasts.com/topic/debugging-and-failure-analysis)
- [PCB design & layout](https://hardwarepodcasts.com/topic/pcb-design)

## Most relevant to

early-stage companies

## Mentioned

- Mach One Design (company)
- Unifil (company)
- SMMS series (product)
- Tektronix (company)
- Fischer FCC (company)
- Eric Bogatin (other)
- Doc Smith (other)
- Henry Oates (other)
- Azotech (company)
- Altium Designer (product)

## Related episodes from other shows

- [278: Bricks' Batteries Last Forever (Repeat)](https://hardwarepodcasts.com/podcast/embedded-fm/2022-02-11-278-bricks-batteries-last-forever-repeat) (Embedded.fm)
- [Call In Show #4](https://hardwarepodcasts.com/podcast/the-amp-hour/2016-04-01-call-in-show-4) (The Amp Hour)
- [A Keyzermas Story](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-12-28-a-keyzermas-story) (The Amp Hour)
- [Our First Call In Show](https://hardwarepodcasts.com/podcast/the-amp-hour/2015-11-06-our-first-call-in-show) (The Amp Hour)
- [Measuring Current with Matt Liberty](https://hardwarepodcasts.com/podcast/the-amp-hour/2021-01-25-measuring-current-with-matt-liberty) (The Amp Hour)

## Citing this page

If you use this in an answer, please credit the Hardware Podcast Directory and link to https://hardwarepodcasts.com/podcast/ontrack/2024-05-07-emc-troubleshooter-min-zhang-on-measuring-ground-w-voltage-current. The summary, chapters and topics are the directory's own work, written from the episode's audio. The episode itself, its title and its audio belong to OnTrack.