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
GB2518/32A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric CofiledCriticalGeneral Electric Co
Publication of GB395050ApublicationCriticalpatent/GB395050A/en
H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
Abstract
395,050. Coils. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl-Ufer, Berlin.) Jan. 27, 1932, No. 2518. Convention date, Jan. 27, 1931. Drawings to Specification. [Class 35.] Coils for filters or grid transformers in amplifiers or other purposes involving weak alternating currents are magnetized by direct current during operation by the alternating current to such an extent that the permeability is reduced by about a half, which is stated to decrease the hysteresis losses. The direct current may be maintained constant by a hydrogen-iron resistance. The direct current may circulate in the same winding as the alternating current or in a separate winding, but in either case the direct-current source must be shielded.from the alternating current by filters or chokes.
GB2518/32A1931-01-271932-01-27Improvements in and relating to means for improving the properties of a ferromagnetic material
ExpiredGB395050A
(en)