Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1993-06-29
1994-11-22
Niebling, John
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204197, C23F 1300
Patent
active
053666046
ABSTRACT:
A cathodic protection system employs a photovoltaic panel for generating current through the metallic body to be protected from corrosion and a ground bed in response to sunlight. A battery is also charged by the photovoltaic panel during daytime, and then supplies current at a reduced level through the metallic body and ground bed during nighttime. A solid state voltage regulator limits the maximum charging voltage across the battery to a predetermined value required to fully charge the battery. A second photovoltaic panel can be included for additional current capacity. In an alternative embodiment, the voltage regulator monitors the battery voltage and triggers a solid state relay to shunt excess current from the photovoltaic panel when the battery voltage exceeds a predetermined limit.
REFERENCES:
patent: 4136309 (1979-01-01), Galbertl et al.
patent: 5026468 (1991-06-01), Carpenter et al.
patent: 5139634 (1992-08-01), Carpenter et al.
"Solo Photovoltaic Power Supplies for Cathodic Protection", brochure. Burge Corrosion Systems, Aztec, N. Mex.
Sun-Loc brochure. Guardian Corrosion Control Corp., Montrose, Colo.
Sun-Guard brochure. Guardian Corrosion Control Corp., Montrose, Colo.
Mayekar Kishor
Niebling John
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