Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1989-07-05
1991-04-16
Valentine, Donald R.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204231, 204406, C25D 1700, C25D 2112
Patent
active
050079930
ABSTRACT:
Computerized apparatus for electrolytic processing of materials, includes an electrolytic processing bath, plural first electrodes, at least one second electrode, and a computerized power supply for supplying time multiplexed power to the electrodes. The power supply may include a pulse width modulator or a pulse position modulator and is operative to control the relative amounts of time that the respective electrodes are energized for electroplating, electropolishing, and the like. Current control and bath composition control are provided. Plural baths may be monitored and/or controlled by a single computer control. A method for electrolytic processing of materials includes placing plural first electrodes in an electrolytic processing bath, placing at least one second electrode in such bath, and using a computer to determine different respective times at which power is supplied between at least one of such first electrodes and such at least one second electrode.
REFERENCES:
patent: 3875030 (1975-04-01), Richards et al.
patent: 4100036 (1978-07-01), Rode et al.
patent: 4153521 (1979-05-01), Litvak et al.
patent: 4749460 (1988-06-01), Komoto et al.
Da Silva Ivan P.
Hull Harry F.
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