Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2000656A
Inventor
Thomas Philip Robinson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLCfiledCriticalStandard Telephone and Cables PLC
Priority to GB2000656ApriorityCriticalpatent/GB792654A/en
Publication of GB792654ApublicationCriticalpatent/GB792654A/en
G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
G05F7/00—Regulating magnetic variables
Abstract
792,654. Electromagnets. STANDARD TELEPHONES & CABLES, Ltd. June 28, 1956, No. 20006/56. Class 35. A constant flux, independent of variations in supply voltage and frequency, is produced by coils 6, 7 producing unequal opposed fields, the difference between them being maintained constant by supplying them through a saturated reactor 1 and an unsaturated reactor 2, respectively. Coils 6, 7 may have the same or different numbers of turns. If the frequency is constant the reactor 2 may be replaced by a resistor.
GB2000656A1956-06-281956-06-28Improvements in or relating to apparatus for producing a magnetic field of constant strength
ExpiredGB792654A
(en)