APPARATUS FOR ANODIC PROTECTION AGAINST CORROSION OF METAL OBJECTS IN CONTACT WITH ELECTRICALLY CONDUCTIVE MEDIA

摘要

An apparatus comprises self-contained potentiostatic device for the potential control of objects electrically connected via a controlled change-over switch to reference (standard) electrodes and auxiliary electrodes, cathodes, in contact with electrically conductive media. The apparatus includes a standby power source connected through the change-over switch to the objects. Connected to the change-over switch control circuit is a means for the object potential. The potentiostatic devices form, together with reference and auxiliary electrodes as well as with the objects, independent control circuits. Provided the potential of one of the objects deviates from the preset value, the means for sensing the potential generates a signal for the change-over switch to connect the stand-by power source to this object.