Title: Practical current cathode protection system
Application Number: 86105112 Application Date: 1986.07.22
Publication Number: 1010969 Publication Date: 1987.05.13
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C23F13/02
Applicant(s) Name: France Gas Corp. Address:
Inventor(s) Name: Morris Lambert
Attorney & Agent: FAN BENGUO
Abstract:
    The system includes means for cyclically putting into operation a circuit for controlling and regulating a DC generator connected between the structure to be protected which constitutes a cathode and the anodes of a group of anodes which are insulated from the structure and are in contact with the electrolyte in which said structure is placed. The circuit includes means for reading the potential provided by a reference electrode, for calculating the potential difference between the structure and the electrode potential as read, and for comparing the calculated potential difference with upper and lower thresholds. The value of the voltage output from the generator may be adjusted by means in steps of predetermined value.
Time: 6