Tom, You simply don't get it. The choke is NOT a filter. It is a high impedance added to the common mode circuit. The common mode circuit is acting as an ANTENNA, either for RX or TX. If for TX, the
Guys, I'm not following all this, possibly because I'm confused by Jim's distinction between "filters" and "chokes," because in both cases they're just lossy inductors, although used in different way
Right -- you are not. First, you don't understand what common mode is. Second, you don't understand the choke. A ferrite common mode choke STARTS OUT as a lossy inductor, but one with shunt capacitan
Consider common mode noise on a simple parallel wire transmission line. Identical in-phase noise currents would flow on each of the parallel wires. A common mode choke around the line would insert a
"Bifilar winding of power leads is a two edged sword. While it reduces core flux from power line currents, it also reduces differential suppression in a similar fashion. In a tightly coupled choke, t
In name only. As Tom noted earlier, AC line filters do NOTHING to the Green wire -- it goes right through them. What the power industry calls "common mode" is voltage between neutral and Green. That'
Data from another treadmill RFI success story. A few days ago Lionel (N5LB) added filters to his treadmill based on what I had done to eliminate RFI from my wife's treadmill, and below are his very s