GB421353A - High frequency inductance coil - Google Patents

Abstract

421,353. Inductances. VOGT, H., 69, Steglitzer Strasse, Lichterfelde, Berlin. March 13, 1933, No. 7538. Convention date, Nov. 28, 1932. [Class 37] An inductance coil for high frequencies comprises an annular multilayer winding 16, 17, Fig. 1, of low capacity arrangement and a core of low permeability non - laminated moulded magnetic material divided into two or more core members 1, 2, which, when assembled, completely enclose the winding. The core members are split at 9. The width and height of the winding cross-section are approximately of the same size. An insertion of elastic non-magnetic material 7 between the core members permits variation of their distance apart as by a screw 6 in one end of the screening casing 3. In the modification Fig. 3, the composition core is made of discs 23, 24, and cylinders 22, 27, separated by elastic material 25, 26, 28, 29 and the core is supported by holders 18, 19, held in the casing 3 by means of the adjusting screw 6. The Specification as open to inspection under Sect. 91 comprises also a coil 11 with a core 12 of loose powder, as in Fig. 2<a> (Cancelled) packed in a casing 14 with compression screw 16, and a further modification in which a multi part enclosing core as in Fig. 3 is composed of aggregated laminations of magnetic core material. This subject-matter does not appear in the Specification as accepted.