Abstract: An electron beam apparatus includes an electron source and a radiative member on which electrons emitted from the electron source are radiated. In addition, a member is provided between the electron source and the radiative member, with the member having an electroconductive first member and a second member formed on the first member to partially exposed the first member.

Abstract: A charge-reducing film is used for coating a surface within a vacuum container containing electron-emitting devices to prevent deviations of electron beams caused by electric charges of the furface. The charge-reducing film comprises a nitrogen compound containing one or more than one transition metals and at least one element selected from aluminum, silicon and boron. An oxide layer may be arranged on the charge-reducing layer.

Abstract: An amorphous magnetic material possesses a composition essentially expressed by (Fe.sub.1-a-b N.sub.a M.sub.b).sub.100-x-y Si.sub.x B.sub.y (M denotes at least one kind of element selected from Mn, Cr, Co, Nb, V, Mo, Ta, W and Zr, 0.395.ltoreq.a.ltoreq.0.7, 0.ltoreq.b.ltoreq.0.21, 1-a-b<a, 6.ltoreq.x.ltoreq.18 at %, 10.ltoreq.y.ltoreq.18 at %, respectively). An amorphous magnetic material which has such a Ni rich Fe-Ni base possesses a Curie temperature T.sub.c of 473 to 573K, the maximum magnetic flux density B.sub.m of 0.5 to 0.9T. A ratio of residual magnetic flux density B.sub.r and the maximum magnetic flux density B.sub.m can be controlled according to a required characteristics, and, in the case of being used in a saturable core, is set at 0.60 or more. With an amorphous magnetic material of an inexpensive Fe-Ni base, magnetic characteristics applicable in a high frequency region, thermal stability, surface smoothness can be realized.

Abstract: An electron emitting device includes a pair of device electrodes disposed at locations opposite to each other, a conductive thin film in contact with both the pair of device electrodes, and an electron emitting region formed in a part of the conductive thin film. The conductive thin film is composed of fine particles including a first metal element serving as a main constituent element and at least one second metal element. The second metal element is to precipitate at the surface of the conductive thin film and thus form a low work function material layer. When a voltage is applied between the pair of device electrodes, the second metal element moves from the inside of the conductive thin film to at least a part of the surface of the conductive thin film.

Abstract: A snubber circuit is possessed of a saturable inductor made of an amorphous alloy and connected in series to a drive circuit for a switching element. A switching power source is a flyback type self-excitation or separate excitation switching power source having a saturable inductor connected in series between a switching element connected in series to a primary winding of a transformer and a drive circuit for actuating the switching element. The saturable inductor connected in series to the switching element serves the purpose of improving efficiency and curbing noise. The saturable inductor of this invention is adapted for use in the snubber circuit and the switching power source mentioned above and has an exciting current, I.sub.ex, of not more than 3 (A) and an amount of magnetic flux, .PHI. (Wb/m.sup.2), in the range of from 2 to 20% of the product of the operating period, T (sec), multiplied by the circuit voltage (V).

Abstract: A magnetic core obtained by laminating or winding a magnetic material ribbon and an electrical insulating material wherein the magnetic core has the relationship of 0.5 a.ltoreq.b<a in which the width of the magnetic material ribbon is "a", and the width of the electrical insulating material is "b".

Abstract: A magnetic core comprises at least one layer of magnetic film composed of an amorphous alloy and an electrically insulating film made of polyimide. Powder materials having a property for alleviating mutual influence between the magnetic thin film and the insulating film during a heat treatment thereof are stuck to a surface of the magnetic film or the insulating film. The magnetic film and the electrically insulating film are alternately wound up in a predetermined shape with powder material interposed therebetween to thereby form a magnetic core.

Abstract: A magnetic core has a wound-up laminated body of thin metal tape which has rolled face and free face (unrolled face) wherein rolled faces or free faces of the thin metal tape are arranged adjacently facing each other in at least a part of said woundup laminated body.

Abstract: A magnetic core has a wound-up laminated body of thin metal tape which has rolled face and free face (unrolled face) wherein rolled faces or free faces of the thin metal tape are arranged adjacently facing each other in at least a part of said wound-up laminated body.

Abstract: A noise suppression device is disclosed which comprises a toroid-shaped device comprising an amorphous magnetic alloy ribbon wound with plural turns, or ring-shaped pieces formed from an amorphous magnetic alloy ribbon and laminated in plural number, and a through-hole through which an electrical line or lead is inserted, and having a value of Do satisfying the relation of L<Do.ltoreq.5L when an average diameter of said device is Do, provided that the average diameter is an arithmetic mean value of the outer diameter of the device and the diameter of the through-hole, and the largest length at a cross section of said line or said lead, L, is smaller than the diameter of the through-hole.The noise suppression device according to this invention is improved in heat-dissipation properties with a great decrease in breakage, and has a superior noise suppresion effect.