ANLAEG TIL AUTOMATISK STYRING OG REGULERING AF GENNEMSNITSVAERDIEN FOR SPAENDINGER, DER PAATRYKKES VED PROCESSER TIL ELEKTROLYTISK FARVNING AF ANODISERET ALUMINIUM

摘要

The present invention provides a system for autocontrolling and regulating the average value of the voltage applied to processes for the electrolytic colouring of anodized aluminium, essentially characterized in that the wavy and symmetrical alternating current is fed from a power transformer, one of whose phases is directly connected to the charge, while the other phase is connected to the charge through two anti-parallel thyristors.