EMI filter for an inrush relay

摘要

A filter for an inrush relay, the relay having a relay coil having first and second leads includes a common-mode inductor connected to the relay coil leads across the relay coil. A first capacitor is connected to the first relay coil lead and a chassis ground potential. A second capacitor is connected to the second relay coil lead and the chassis ground potential. A third capacitor is connected to the relay coil leads across the relay coil. A first resistor is connected to the first relay lead, and a second resistor is connected to the second relay coil lead. The inductor and first and second capacitors form a high frequency common-mode filter. The third capacitor and first and second resistors form a high frequency differential mode filter.