Accession Number : ADD008850

Title :   Isolated DC Voltage Monitoring System.

Descriptive Note : Patent,


Personal Author(s) : Carey,Richard L ; McGuffey,Gale W

Report Date : 21 Jul 1981

Pagination or Media Count : 9

Abstract : Apparatus for electrically isolating a DC voltage source while the voltage of the source is being measured or otherwise monitored. An electronic switch is provided for selectively coupling the apparatus to the source, and a first optical device coupled to the switch receives a control signal which directs switch operation. The first optical device electrically isolates the switch from electrical equipment which generates the control signal. A device for generating an internal voltage data signal is also coupled to the switch, the frequency of such signal varying according to the voltage of the source. A second optical device receives the internal data signal, and couples an external data signal to voltage monitoring equipment, the external data signal having a frequency which varies according to the frequency of the internal data signal, the second optical device electrically isolating the switch from the voltage monitoring equipment. (Author)

Descriptors :   *Patents, *Voltmeters, *Monitors, *Optical equipment, Data transmission systems, Electrical equipment, Direct current, Electronic switches, Operation, Monitoring, Sources, External, Voltage, Signals, Internal, Control

Subject Categories : Electrical and Electronic Equipment
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE