Abstract: The device provides the possibility of feeding test signals to a thermoelectric module by virtue of the use of controllable switches and also makes it possible to increase test criteria and to detect faults and the causes of said faults at early stages outside of the use process of the thermoelectric module (TEM), as well as in periods between use. This technical result is achieved in that the device comprises a DC source, a measurement circuit, a first, a second, a third and a fourth controllable switch, which are used for feeding test signals and are switched on and off by a temperature controller. The first and the second controllable switches are used for connection to the DC source, and the third and fourth switches are grounded with the possibility of switching from the third controllable switch over to the first controllable switch and from the fourth controllable switch over to the second controllable switch.

Abstract: The method for manufacturing printed circuit boards includes providing through hole vias in a non-conductive substrate at given coordinates in a printed circuit board topology, then an adhesive undercoat, a conductive layer and a metal mask layer are applied, in a single process, to the surface of the substrate and to the walls of the vias. A soluble protective layer is applied to the mask layer and to the walls of the vias, then a circuit board pattern is formed by laser evaporation, then the conductive layer and the adhesive undercoat in the regions exposed by laser evaporation are removed by selective chemical etching. The protective layer is removed from the regions that are not exposed by laser evaporation and the vias, then the metal mask layer is removed. Finally, a protective barrier layer and a layer that provides solderability and/or weldability of the surface are applied.

Abstract: The device provides the possibility of feeding test signals to a thermoelectric module by virtue of the use of controllable switches and also makes it possible to increase test criteria and to detect faults and the causes of said faults at early stages outside of the use process of the thermoelectric module (TEM), as well as in periods between use. This technical result is achieved in that the device comprises a DC source, a measurement circuit, a first, a second, a third and a fourth controllable switch, which are used for feeding test signals and are switched on and off by a temperature controller. The first and the second controllable switches are used for connection to the DC source, and the third and fourth switches are grounded with the possibility of switching from the third controllable switch over to the first controllable switch and from the fourth controllable switch over to the second controllable switch.