System for autocontrolling and regulating the average value of t

Details System for autocontrolling and regulating the average value of t System for autocontrolling and regulating the average value of t

1975-10-06

1977-03-08

Tufariello, T. M.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204DIG9, C25D 906

Patent

active

040111520

ABSTRACT:
Apparatus for electrolytically coloring anodized aluminum comprises a power transformer whose secondary winding has one phase connected directly to the charge and its other phase connected to the charge through two anti-parallel thyristors. One of the thyristors is triggered in accordance with a predetermined program, and the other thyristor is triggered in dependence upon unbalance in the average values of the voltages applied to the charge in consecutive half cycles of the alternating current applied to the charge, in such a manner as to tend to eliminate the unbalance.

REFERENCES:
patent: 2951025 (1960-08-01), Mostovych
patent: 3418222 (1968-12-01), Schaedel
patent: 3597339 (1971-08-01), Newman et al.
patent: 3622804 (1971-11-01), Mitchell

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