The above list of EMI filters could be designed as popular-mode filters by bringing in an extra reference conductor. As is very well-recognised, popular-manner currents are induced by way of parasitic capacitance to an out of doors reference, such as metal while in the chassis or some exterior conductor (i. https://hud-helmet20657.newsbloger.com/31754879/getting-my-ac-emi-filter-to-work