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    72.
    发明专利
    未知

    公开(公告)号：DE2366243B1

    公开(公告)日：1981-02-12

    申请号：DE2366243

    申请日：1973-08-24

    Applicant: RADIATION DYNAMICS

    Inventor： C THOMPSON JUN CHESTER ,  E OLSEN SEVERT ,  J LOBY RAYMOND

    IPC: H01T4/16 ,  H01T4/20 ,  H02H7/12 ,  H02H9/06 ,  H02M7/04 ,  H02M7/06 ,  H02M7/10 ,  H01L25/02 ,  H01T5/00

    Abstract: A high voltage solid-state rectifier includes multiple series connected ac-compensated diodes and series buffer resistors in a stepped spiral stack. The stack is encased in a sectionalized faraday shield which provides 360 DEG isolation from external rf electrostatic fields and provides external capacitance grading along the stack. Spark gaps between shield sections prevent excessive voltage build-up due to electrical discharges and are arranged in line of sight of each other to permit the ultra-violet light produced from one spark gap firing to stimulate the firing of the other spark gaps. A trigger spark-gap derives its voltage from an inductance in series with the solid-state rectifier. Any electrical discharges which result in an excessive voltage appear initially across the inductance, firing the trigger spark gap which in turn initiates the other spark gaps to fire by ultra-violet stimulation.

    HIGH VOLTAGE POWER SUPPLIES
    79.
    发明专利
    HIGH VOLTAGE POWER SUPPLIES 未知

    公开(公告)号：GB1408822A

    公开(公告)日：1975-10-08

    申请号：GB1120073

    申请日：1973-03-07

    Applicant: RADIATION DYNAMICS

    IPC: H02M5/12 ,  H01G4/38 ,  H02M7/10

    Abstract: 1408822 Voltage multiplying rectifiers RADIATION DYNAMICS Inc 7 March 1973 [15 March 1972] 11200/73 Heading H2F [Also in Division H1] A capacitor structure for power supply comprises a plurality of conductive cylinders 13, 14, 16, 17 and associated with each cylinder a group of sleeves such as 18, 19, 20 coaxial with the cylinder and axially spaced along it, the spacing being such as to prevent voltage breakdown between adjacent sleeves. As shown, in a power supply for use with high voltage accelerators (see Division H3) the cylinders which may be hollow, are disposed symmetrically within vessel 1, 2, 3, which also contains step-up transformer 4 and, in the central space, circuit board 21 supporting solid state rectifiers. Diametrically opposite cylinders are electrically connected in pairs to provide a series parallel assembly (Fig. 4), the pairs being connected to opposite ends of the transformer secondary winding. The rectifiers, which are located remote from the spaces between sleeves, join sleeves having opposite polarity of the alternating voltage applied thereto, and since they are solid state there is room for several rectifier junctions in each rectifier stage to overcome the peak inverse voltage limitations of each rectifier stage. In a modification (Fig. 5, also Fig. 6, not shown) the interconnection is such as to provide a half-wave voltage doubler, all capacitors and associated rectifiers being connected in series and individual capacitors being charged through a different rectifier stage. In further modifications, a single phase, full wave voltage doubler, constituted by two half-wave circuits in parallel, is provided (Fig. 7, not shown), or a three-phase half-wave voltage doubler (Figs. 8, 9, not shown) or a three-phase full-wave voltage doubler (Fig. 10, not shown). The latter two embodiments differ from the Fig. 1 arrangement in using those inner cylinders and associated groups of sleeves, and arrangements using two inner cylinders are envisaged. The vessel may be filled with insulating gas, e.g. sulphur hexafluoride under pressure, or, less desirably a solid dielectric may separate the capacitor plates.

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