Power supply for cathodic protection system

Details Power supply for cathodic protection system Power supply for cathodic protection system

1988-03-21

1991-12-31

Pellinen, A. D.

Electrical transmission or interconnection systems

Anti-electrolysis

204196, 204147, C23F 1300

Patent

active

050774867

ABSTRACT:
A power module for a cathodic protection system is provided having a switch-mode power circuit and a synchronous switch assembly. The method of the invention comprises rectifying an alternating utility power signal with a power transformer and switch assembly. The switch assembly is controlled by a phase control circuit to provide a selective controlled phase delay to provide a 0-100% range power signal to the load selectively operable in a constant current, constant voltage or off-potential manner.

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patent: 4035268 (1977-07-01), Hote
patent: 4080272 (1978-03-01), Ferry et al.
patent: 4383900 (1983-05-01), Garrett
patent: 4437065 (1984-03-01), Woudstra
patent: 4587479 (1986-05-01), Rhoades et al.
patent: 4592818 (1986-06-01), Cavil et al.
patent: 4664764 (1987-05-01), Zofan
patent: 4780189 (1988-10-01), Ridgley

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