The best suited form of ground for very low-frequency applications may be the single-point ground. The return currents in the three circuits will flow from the widespread floor impedances linking the circuits. 22). Intricate information of these two standards were summarized within the EMI common post which we reviewed earlier. https://officeineriordesignindhak04702.thekatyblog.com/30281253/the-ultimate-guide-to-emc-emi-filter-design-with-rb-common-mode-chokes