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
GB29074/55A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries LtdfiledCriticalPhilips Electrical Industries Ltd
Publication of GB779044ApublicationCriticalpatent/GB779044A/en
H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
H01F21/00—Variable inductances or transformers of the signal type
H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
H01F21/08—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by varying the permeability of the core, e.g. by varying magnetic bias
Abstract
779,044. Inductors. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 12, 1955 [Oct. 15, 1954], No. 29074/55. Class 38 (2). An electrical inductor -more particularly for correcting the linearity of the deflection current in a television receiver-comprising a coil 3 surrounding an open-ended core 1 pre-magnetized by permanent magnetism is characterized in that there are a number of permanent magnets 25 of elongated shape secured around the coil 3 in positions parallel to the core 1. The means for securing the permanent magnets in position comprises a thermoplastic casing 7 provided with apertures for the coil 3 and the magnets 25.
GB29074/55A1954-10-151955-10-12Improvements in or relating to inductance coils
ExpiredGB779044A
(en)
Improvements in or relating to devices comprising a circuit of highly-permeable material and a permanent magnet for producing a pre-magnetizing field in said circuit