EMI filter for an inrush relay

Details EMI filter for an inrush relay EMI filter for an inrush relay

1999-10-07

2000-12-19

Berhane, Adolf Deneke

Electric power conversion systems

Current conversion

Including automatic or integral protection means

323908, H02H 7125

Patent

active

061634700

ABSTRACT:
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.

REFERENCES:
patent: 4236198 (1980-11-01), Ohsawa et al.
patent: 4321447 (1982-03-01), Lamb
patent: 4503365 (1985-03-01), Kirk
patent: 4910654 (1990-03-01), Forge
patent: 5187653 (1993-02-01), Lorenz
patent: 5513088 (1996-04-01), Williamson
patent: 5920186 (1999-07-01), Ninh et al.

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