Abstract: Very compact thermoelectric microgenerator providing a high output voltage (10 V) and having high efficiency, comprising a great number of thermocouples arranged in rows connected together so as to form a continuous conductor of deposited thin layers on a thin insulating support. The cold and hot sources are fitting provided with low walls parallel to one another and orthogonal to the rows of thermocouples. The even junctions of the thermocouples are placed in the vicinity of the low walls of the cold source and the odd junctions are placed in the vicinity of the low walls of the hot source. Application is to implanted medical appliances.

Abstract: Method for the manufacturing of thermoelectric modules, consisting in assembling a succession of alternate plates of P type and of N type separated by insulating sheets, of which one in two protrudes beyond the upper face of the assembly, the others protruding beyond the lower face. After immersion of these two faces in the brazing material to establish junctions separated by insulating sheets, the assembly is cut up into thin slices, orthogonally to the plates and one thin slice in two is overturned before the cementing of the slices together. The invention is used in heart stimulators.

Abstract: Thermoelectric long-lasting microgenerator which may be implanted in the human body, using a cylinder containing a radioactive isotope as a heat source and the human body as a cold source. The connection between the heat source and the thermoelectric element is effected by means of a supple substance which is a poor conductor of electricity. The rest of the heat source is surrounded by a volume affording a very high impedance to the propagation of heat.

Abstract: Module for conditioning air by the Peltier effect, comprising a hot plate and a cold plate arranged face to face, divided into strip plates and both provided with ribs, the P and N thermoelements connected by the strip plates and arranged between the crests of the cold ribs and the crests of the hot ribs, the cold ribs are vertical and the hot ribs are vertical or horizontal. The air to be conditioned circulates by natural convection along the vertical ribs without forced ventilation.

Abstract: A manufacturing method of thermoelectric modules having slight internal resistance comprising very thin plates of P type and of N type stacked alternately and connection bridges between each plate of P type and the neighbouring plates of N type. The method is characterized in that after cutting out of the plates of P and N type an alternate sequence of plates of P type and of N type is formed by assembling plates, and by inserting, between two plates, insulating sheets every other one of which extends beyond the upper face of the assembly, the others extending beyond the lower face and then by immersion of the lower and upper faces in brazing material.