Digital control of electrolytic current

Details Digital control of electrolytic current Digital control of electrolytic current

1976-09-02

1978-03-14

Mack, John H.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204109, C25B 1502, C25C 120

Patent

active

040789837

ABSTRACT:
Electrical current used in electrolytic recovery of metals, such as silver, is controlled digitally by causing pulses from an oscillator operating at a first frequency to be counted during introduction of silver bearing salts into solution and causing the electroplating current to correspond to the cumulative count. Thereafter, following salt introduction, the oscillator is operated at a second frequency, corresponding to the previously accumulated count, and the counter is counted down at this second frequency while the electroplating current is correspondingly reduced.

REFERENCES:
patent: 3463711 (1969-08-01), Geyken
patent: 3616435 (1971-10-01), Favell et al.
patent: 3925184 (1975-12-01), Cave
patent: 4018658 (1977-04-01), Alfin et al.

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