Abstract: A resistor device comprises a first film of resistive material deposited on a dielectric substrate and having two terminal portions for connection to an electrical circuit, and a second film of resistive material deposited on the substrate in thermally-conductive contact with the first film and electrically isolated therefrom. The material of one of the films has a relatively high temperature coefficient of resistance, so that the resistance of that film can be utilized as an indication of the temperature of the other film.

Abstract: A humidity sensitive resistor, comprising a pair of detecting electrodes (2) and (3) formed on an insulating substrate (1), and a humidity sensitive film (4) formed to coat on this detecting electrodes, the humidity sensitive film (4) being made of an integrated structure of a first layer macromolecular resin film (5) containing a polyvinyl alcohol polymer and an electrolyte and a second layer of hygroscopic macromolecular resin film (6) covering on the surface of the first layer, and humidity being detected with the aid of a change of the resistance value of this humidity sensitive film (4).