A device for converting electric energy into heat energy, which comprises a circuit for converting electrical energy into heat energy a circuit carrier in a half-round shape supporting the converter circuit a male-type connector being connected to the circuit diode by means of a cable (black) a grounding spring being connected to the circuit diode by means of a cable (red) and a spring connecting the converter circuit with the power source. The cauterizer of the present invention is formed by the aforementioned device intended to transform electrical energy into heat energy and a cauterizing head, which simultaneously comprises a female connector, where one end portion thereof is connected to the male connector of the converter device, and the other end portion is fastened to a couple of terminals, where a resistive metallic tip is welded the base of a nut is welded to the end portion where the couple of terminals is welded, then surrounding the resistive metallic tip, but withou t being totally covered an insulating material filling the inner portion of the nut for dissipating the excess of heat and providing support to the resistive metallic tip.Un dispositivo para convertir energía eléctrica a energía calórica, que comprende, un circuito convertidor de energía eléctrica a energía calorífica un porta circuito, en forma de media caña, soporta al circuito convertidor de energía a energía calórica un conector tipo macho se conecta con el diodo del circuito, por medio de un cable (negro) un muelle para hacer tierra, se conecta con el diodo del circuito, mediante un cable (rojo) y un resorte conecta el circuito convertidor con la fuente de energía. Un cauterizador de la presente invención que se conforma del dispositivo para convertir energía eléctrica a energía calórica, antes descrito y una cabeza cauterizadora, la cual a su vez comprende, un conector tipo hembra, donde uno de sus extremos se conecta con el conector macho del dispositivo convertidor, y el otro extrem