Alternate voltage, adjustable dissymmetric wave feeder, particularly suitable for processes of electrolytic colouring of aluminium, its alloys and the like.

摘要

Alternate voltage feeder with dissymmetric waves of adjustable amplitude and duration, suitable for aluminium electrolytic colouring processes, comprising a three-phase feed transformer, on whose phases of the secondary circuit a direct current rectifier of the controlled diode bidirectional type and a ignition circuit for said diodes are associated, said ignition circuit being constituted by a generator of reference waves of the bidirectional type, suitable for generating pulses which, after a check on a node with the output alternate voltage, and the following amplification and transformation, provide to the ignition of said diodes; the adjustment of the duration and amplitude of the output half waves can be achieved either by hand or by a process computer, so as to obtain at the outlet reverse polarity and dissymmetric waveforms. <IMAGE>