Protection device against overvoltages in electric welding circuits. (Machine-translation by Google Translate, not legally binding)

摘要

Protective device against surges in electric welding circuits, especially for the protection of the user and in whose circuits are used, electronic components conveniently interconnected, characterized in that it is constituted by a power thyristor that is placed in series with the voltage step circuit and welding current, which is triggered or maintained blocked according to a sample of electrical resistance obtained in the output terminals through a series constitution of resistors and diodes that produce voltage drops that are compared in an integrated circuit constituted by two comparators, a scale and a logic generator, which performs the comparison or not the tilting occurs and the logic level that attacks the door originates its triggering or blocking so that the voltage in i welding terminals does not exceed perfectly determined levels; leak from the instants in which the welding is made. (Machine-translation by Google Translate, not legally binding)