US 5,208,576 A · Electrical external resistance

Abstract

An electrical external resistor with a plate-like, electrical insulating carrier element and a flat resistance element arranged on the upper side of the carrier element. The carrier element has several films forming a closed coating and varying in their electrical conductivity. The films arranged on the upper side and on the lower side of the carrier element consist of cermet, and the film covering the edge area of the carrier element consists of an electrically insulating material. By means of springs or a pressure distribution plate, the resistance element is pressed against the upper cermet film of the carrier element. The interior space of the housing is filled with a casting compound made of addition cross-linking two-component silicon caoutchouc (rubber). The electrical external resistance is discharge-free.

Claims23

Dependent claims

An electrical resistor comprising:

a plate-like electrically insulating carrier element having a lower surface, an upper surface and an edge area surrounding said upper and lower surfaces;
a coating covering said carrier element and comprising a first film consisting of an electrically conductive material and applied to said lower surface of said carrier element, a second film consisting of cermet and applied to said upper surface of said carrier element, and a third film consisting of an electrically insulating material and applied to said edge area of said carrier element;
a flat resistance element;
and
means for pressing said resistance element into contact with said second film.

2 more elements

Dependencies are inferred from the claim text.

Electrical external resistance

Life of this patent

Electrical external resistance

Life of this patent

Abstract

Claims23