HEAT FLOW RATE COMPARATOR

Thermal flux comparator comprises: two plane parallel input faces each receiving a thermal flux and a thermoelectric circuit with a ribbon (1) of a first metallic material partially covered on one of its faces distributed with plates (2) of a second metallic material; two further insulating layers (5, 6) of a first insulating material placed on either side of the thermoelectric circuit; and second (3b) and third (4b) sets of plates placed on the surfaces of the insulating material. Second and third plates sets have the same thicknesses and material as do the insulating layers. The invention also relates to a corresponding use of the inventive flux comparator for generation of a measurable electrical signal proportional to a thermal flux difference.