Abstract: An electrical connector includes an electrically insulating body and a self-passivating contact held at a higher voltage than a non-passivating contact. The self-passivating contact includes a first electrically conductive material that forms an electrically insulating passivation layer when exposed to water or other aggressive environment. The non-passivating contact includes a second electrically conductive material that is unreactive when exposed to water or other aggressive environment. The passivation layer on the self-passivating contact prevents electric current from flowing between the self-passivating contact and the non-passivating contact through the water or other aggressive environment.

Abstract: An electrical connector includes an electrically insulating body and a self-passivating contact held at a higher voltage than a non-passivating contact. The self-passivating contact includes a first electrically conductive material that forms an electrically insulating passivation layer when exposed to water or other aggressive environment. The non-passivating contact includes a second electrically conductive material that is unreactive when exposed to water or other aggressive environment. The passivation layer on the self-passivating contact prevents electric current from flowing between the self-passivating contact and the non-passivating contact through the water or other aggressive environment.

Abstract: Methods and systems to transform an alternating current into constant-polarity constant or pulsed voltages, provide these to a first group of contacts of an electrical connector assembly such that none of the contacts is subjected to polarity reversal, receive the constant-polarity constant or pulsed voltages from a second group of contacts of the electrical connector assembly, and reconstruct the alternating current from these voltages.

Abstract: Methods and systems to transform an alternating current into constant-polarity constant or pulsed voltages, provide these to a first group of contacts of an electrical connector assembly such that none of the contacts is subjected to polarity reversal, receive the constant-polarity constant or pulsed voltages from a second group of contacts of the electrical connector assembly, and reconstruct the alternating current from these voltages.

Abstract: An electrical connector is provided for supplying power in an electrolytic environment. The connector includes first and second mating contacts, each of which is coated with an electrically conductive material that includes a transition metal capable of forming a non-conductive passivation layer in an electrolytic environment. Each contact includes a substrate covered by the electrically conductive coating. The substrate may be formed of a material that is not capable of forming a non-conductive passivation layer in the electrolytic environment. The substrate material for each contact may be conductive or non-conductive, and may have different material properties than the electrically conductive coating.

Abstract: An electrical connector is provided for supplying power in an electrolytic environment. The connector includes first and second mating contacts, each of which is coated with an electrically conductive material that includes a transition metal capable of forming a non-conductive passivation layer in an electrolytic environment. Each contact includes a substrate covered by the electrically conductive coating. The substrate may be formed of a material that is not capable of forming a non-conductive passivation layer in the electrolytic environment. The substrate material for each contact may be conductive or non-conductive, and may have different material properties than the electrically conductive coating.

Abstract: Methods and systems to transform an alternating current into constant-polarity constant or pulsed voltages, provide these to a first group of contacts of an electrical connector assembly such that none of the contacts is subjected to polarity reversal, receive the constant-polarity constant or pulsed voltages from a second group of contacts of the electrical connector assembly, and reconstruct the alternating current from these voltages.