Abstract: An arrangement for inductively transmitting energy for charging an energy storage device of a rail vehicle. A first induction element transfers energy to a second induction element. An inverter with an adjustable AC voltage frequency provides an AC voltage to the first induction element. A controller controls the AC voltage frequency of the inverter. A measuring device ascertains a power output value during the wireless energy transmission and transmits the value to the controller and the controller adjusts AC voltage frequency of the inverter downward from an upper threshold until a pre-specified power output value is set while energy is being transmitted. The first induction element is paired with a track for rail traffic. The system and a method are also described for inductively transmitting energy for charging an energy storage device of a rail vehicle.

Abstract: An arrangement for inductively transmitting energy for charging an energy storage device of a rail vehicle. A first induction element transfers energy to a second induction element. An inverter with an adjustable AC voltage frequency provides an AC voltage to the first induction element. A controller controls the AC voltage frequency of the inverter. A measuring device ascertains a power output value during the wireless energy transmission and transmits the value to the controller and the controller adjusts AC voltage frequency of the inverter downward from an upper threshold until a pre-specified power output value is set while energy is being transmitted. The first induction element is paired with a track for rail traffic. The system and a method are also described for inductively transmitting energy for charging an energy storage device of a rail vehicle.

Abstract: The invention relates to a variable transformer comprising at least one primary winding and at least one secondary winding which can be rotated in relation thereto. The primary winding and the secondary winding are subdivided into at least two winding sections. The winding sections interlock in a comb-like manner and the flow of current of directly opposite winding sections is directed in the respective opposite direction.

Abstract: A switching device suitable for operation in temperatures over 150 C comprises first 1 and second 2 transistors, the source 1S of the first transistor being connected to the drain 2D of the second transistor, the gate 2G of the second transistor being connected to the source 1S of the first transistor and the gate 1G of the first transistor being connected in use to control circuitry 3 such that current flow through the transistors is controlled in use by the application of a control signal from the control circuitry, characterised in that the first and second transistors are both operative at temperatures over 150 C.

Abstract: An electrical circuit package comprises a ceramic substrate (1) with an electrical circuit pattern formed on one surface thereof, an opposite surface of the substrate being metallized, and an electrically conductive platelet (2) and a conductor body (3), arranged so that a first face of the platelet is soldered to the metallized surface of the substrate and an opposite face of the platelet is affixed in contact with the conductor body. A method of constructing the package is also described.

Abstract: A method of treating an electronic component comprising an insulating substrate with conductive areas formed thereon to metallise the surface of at least one of the conductive areas comprises the steps of: a) applying a protective barrier to areas of the component which are not to be treated, b) cleaning the unprotected areas of the component, c) applying a layer of nickel to the cleaned areas, d) applying a layer of gold to the nickel coated areas, and e) removing the protective barrier. An electronic component comprising an insulating substrate with at least one conductive area formed thereon, wherein said at least one conductive area is coated with a layer of nickel, the layer of nickel being in turn coated with a layer of gold is also claimed.

Abstract: The invention relates to a variable transformer comprising at least one primary winding and at least one secondary winding which can be rotated in relation thereto. The primary winding and the secondary winding are subdivided into at least two winding sections. The winding sections interlock in a comb-like manner and the flow of current of directly opposite winding sections is directed in the respective opposite direction.

Abstract: A power distribution system is described for supplying power to electronic assemblies, in particular for use in the field of deep ocean oil production. The electrical power is supplied from a voltage source via a supply cable to theprimary winding of a distribution transformer. A number of secondary windings, preferably four, are disposed in addition to the primary winding on the core of the distribution transformer. The windings on the common core are subdivided into a number n of winding packs corresponding to the number n of secondary windings, and with each winding pack containing an n-th part of the primary winding and one of the secondary windings. Electronic assemblies are each connected via a connecting cable to one of the secondary windings.

Abstract: A power distribution system is described for supplying power to electronic assemblies, in particular for use in the field of deep ocean oil production. The electrical power is supplied from a voltage source via a supply cable to the primary winding of a distribution transformer. A number of secondary windings, preferably four, are disposed in addition to the primary winding on the core of the distribution transformer. The windings on the common core are subdivided into a number n of winding packs corresponding to the number n of secondary windings, and with each winding pack containing an n-th part of the primary winding and one of the secondary windings. Electronic assemblies are each connected via a connecting cable to one of the secondary windings.