Constant current variable voltage divider

Claim 1

A constant current variable voltage divider comprising, an electrically non-conductive substrate having at least one substantially planar surface, a plurality of conductive terminals on said surface, a resistive base film formed on said surface for forming a first electrically resistive path, said first path being electrically connected at its ends to respective terminals, a second resistive base film formed on said surface for forming a second electrically resistive path, said second resistive path comprising an elongated resistive portion and a relatively enlarged resistive portion, said elongated resistive portion having one end thereof connected to a respective third terminal and the other end connected to said relatively enlarged resistive portion, selectively adjustable conductive contactor means supported on said surface for rotatable movement thereon and having a portion thereof in sliding mechanical and electrical contact with said first resistive path and another portion thereof in sliding mechanical and electrical contact with the said relatively enlarged resistive portion, whereby a constant current flow may be maintained between the terminals connecting to said first path and a variable voltage may be selectively coupled by said adjustable conductive contactor means, said second resistive path and said third terminal.