Itt Corporation

John Robert Moore

Gerald Ray Nieman

Scott Allen Zehrung

Albert Ragl

Clarence Lester Iii Clyatt

Eric James Paulus

Gerald R Nieman

Clarence L Clyatt, Iii

Eric J Paulus

John R Moore

Scott A Zehrung

A contact assembly for installation in an electrical connector, provides effective electromagnetic filtering in a simple, compact, and rugged construction that facilitates in-field replacement of a damaged contact assembly. The contact assembly includes a signal conductor, a diode for diverting high voltages on the signal conductor to ground, and a 'pi' filter for filtering out unwanted frequencies. The 'pi' filter includes a ferrite bead inductor coupled to the signal conductor and a first capacitor coupling a location of the signal conductor on a first side of the inductor to ground. The other capacitor of the 'pi' filter is formed by the capacitance of the diode, with the diode connected to a signal conductor location on a second side of the inductor, and with the capacitance of the diode similar or equal to that of the first capacitor. The diode is mounted in a notch of the signal conductor, the ferrite bead inductor lies immediately forward of the notch, and the first capacitor lies immediately forward of the ferrite bead. A ground conductor has a sleeve portion that immediately surrounds both the first capacitor and the ferrite bead, and has a finger contacting the diode. Solder holds the finger of the ground conductor in place both mechanically and electrically. A quantity of epoxy fills the remaining notch area and forms the middle of the assembly with a cylindrical periphery to facilitate insertion and removal from a long narrow hole in the connector.

Filter contact

Growing community of inventors

Mesa, AZ, United States of America

Albert Ragl