Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1982-05-24
1984-02-07
Andrews, R. L.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204117, 204228, 204DIG9, 323247, C25C 118
Patent
active
044301782
ABSTRACT:
A method and apparatus for effecting periodic current reversal in metal electro-deposition processes are disclosed. By using a circuit in which the current always flows in the same direction through a filter reactor, regardless of the current flow through the electro-deposition cell, faster reversal switching times are obtained. The overshoot and AC ripple encountered on current reversal are also decreased.
REFERENCES:
patent: 4024035 (1977-06-01), Enchev et al.
patent: 4105527 (1978-08-01), Enchev et al.
Anderson Harold J. T.
Kerby Robert C.
Krauss Clifford J.
Neame Hubert W.
Andrews R. L.
Cominco Ltd.
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