Abstract:
Disclosed herein are a high-voltage generator for an x-ray source, an x-ray gun, an electron beam apparatus, a rotary vacuum seal, a target assembly for an x-ray source, a rotary x-ray emission target, and an x-ray source. These various aspects may separately and/or together enable the construction of an x-ray source which can operate at energies of up to 500 kV and beyond, which is suitable for use in commercial and research x-ray applications such as computerised tomography. In particular, the high-voltage generator includes a shield electrode electrically connected intermediate of a first voltage multiplier and a second voltage multiplier. The electron beam apparatus includes control photodetectors and photo emitters having a transparent conductive shield arranged therebetween. The rotary vacuum seal includes a pumpable chamber at a position intermediate between high-pressure and low-pressure ends of a bore for a rotating shaft. The rotary target assembly is configured such that when a torque between a bearing housing and a vacuum housing exceeds a predetermined torque, the bearing housing rotates relative to the vacuum housing. The rotary x-ray emission target has a plurality of target plates supported on a hub, the plates being arranged on the hub to provide an annular target region about an axis rotation of the hub. The x-ray gun is provided with a shield electrode maintained at a potential difference relative to the x-ray target different to the electron beam emission cathode.
Abstract:
High voltage diode-connected gallium nitride high electron mobility transistor structures or Schottky diodes are employed in a network including high-k dielectric capacitors in a solid state, monolithic voltage multiplier. A superjunction formed by vertical p/n junctions in gallium nitride facilitates operation of the high electron mobility transistor structures and Schottky diodes. A design structure for designing, testing or manufacturing an integrated circuit is tangibly embodied in a machine-readable medium and includes elements of a solid state voltage multiplier.
Abstract:
The invention is directed to a voltage rectifier (23) comprising at least two diode arrays (33, 34, 35, 36) each comprising plural diodes (33a, 33b, 33p, 34a, 34b, 35a, 35b, 35p, 36a, 36b, 36c, 36d, 36p) connected in series. The diode arrays are arranged in an enclosure (47). The diode arrays are arranged in a special arrangement for providing an even distribution of a field strength. According to an embodiment and with respect to the figures, the vertical distance between an enclosure (47) and the diode arrays (33, 34, 35, 36) increases when horizontally distancing from the direct current terminals. Further, the invention provides a voltage generator (21) and a voltage rectifier (23) having such a voltage rectifier.
Abstract:
In a high-voltage generator including a CW circuit (high-voltage circuit), where the CW circuit generates a high voltage through booster circuits that are provided for boosting an input voltage and connected to one another in multiple stages, a conductive shielding member for shielding electric circuit parts used for the CW circuit from an electrical discharge that occurs outside or inside the high-voltage generator is provided between the electrical circuit parts. Accordingly, the electric circuit parts are prevented from being damaged and/or burnt by the electrical discharge and the high-voltage generator is miniaturized.
Abstract:
A high-voltage power supply (10) includes: a power scaling section (130) that receives an input voltage signal and converts the input voltage signal to a controllable DC voltage; a push-pull converter (140) for converting the controllable DC voltage to a high-frequency wave; and a voltage multiplier (200) receiving the high-frequency wave generated by the push-pull converter (140) and performing successive voltage doubling operations to generate a high-voltage DC output. In one implementation, the voltage multiplier (200) receives a square wave having a frequency of approximately 100 kHz and outputs an adjustable DC voltage of approximately 0-to-30 kV. In one implementation, the high-voltage power supply (10) includes an insulation system (250) for the voltage multiplier module (200), such an insulation system being formed of n insulating layers and m conducting strips positioned between successive insulating layers.
Abstract:
Disclosed is a system comprising a plurality of networks, encapsulated in substantially electrically non-conductive materials and positioned interior to the outer surface of an encasement region. According to the invention, at least one outer surface of at least one of the encapsulated networks is complementary to, adjacent to, and in physical contact with at least one outer surface of at least one other of the encapsulated networks. Also disclosed is a method for constructing the system. In a preferred embodiment, the system is a toroidally shaped power supply whose modular structure facilitates ease of testing and assembly, affords considerable space savings, substantially reduces manufacturing waste costs, and eliminates a proven source of circuit failure.
Abstract:
A power source device including a lower voltage inverter transformer having plural secondary windings and a higher voltage inverter transformer having a primary winding connected directly to one of the secondary windings of the lower voltage inverter transformer without any rectifying circuit or inverter circuit interposed therebetween. The lower voltage and higher voltage transformers are contained in the same casing, the internal space of which is filled with an electrically insulative material to provide a unit device.
Abstract:
A plurality of stages of capacitors and diodes interconnected in a parallel wired Cockcroft-Walton multiplier circuit, wherein capacitors in successive stages of the circuit are constructed of reduced physical size as compared with preceding stages, corresponding to reduced capacitor voltage ratings, to provide a cascade multiplier circuit of reduced total length.
Abstract:
A diode-capacitor multiplier circuit usable with an electro-static spray gun has two different values of capacitors. By changing the ratio of the number of larger size capacitors to the number of smaller size capacitors, the amount of energy stored in the multiplier circuit may be increased or decreased changing the probability of ignition, and also the quality of the coating received by the subject article.
Abstract:
A Cockcroft-Walton voltage multiplying circuit constructed for use in a slim hole well logging tool includes a plurality of capacitor packages having a first capacitor package, adapted to receive an input voltage, and a last capacitor package. A plurality of high voltage rectifier packages of which each rectifier package, except for a last rectifier package, are physically as well as electrically interconnected with two capacitor packages. The last rectifier package is connected to the last capacitor package so that all of the capacitor packages and all of the rectifier packages form an inline rigid body. Output terminals are connected to the last rectifier package for providing the high voltage developed by the capacitor packages and the rectifier packages in response to a received input voltage.