Abstract: A transformer of a Tesla type, and energy supply and particle accelerator devices that include such transformers. The electrical transformer includes a primary winding, a secondary winding which is electromagnetically coupled to the primary winding, and is characterized in that the primary winding consists of one single turn. The transformer operates without any soft magnetic core. The single turn is formed by at least two sector segments of a rotationally symmetric body, over which segments a voltage is applied. Preferably, the segments are equal in size, the voltages are equal in magnitude and one end of each segment is kept at ground potential. In an energy supply and an accelerator according to the present invention, a switch controlling the application of the voltage over the primary winding has controlled turn-on and turn-off preferably is an IGBT switch.

Abstract: The invention relates to a power modulator of pulse transformer type. The pulse transformer includes at least one secondary winding and a number of primary windings. The primary windings share a common ground terminal, but each "hot" terminal is independently connected to a respective dedicated pulse generating module, which includes a pulse switch, such as an IGBT-switch, connected to an energy storage capacitor. The pulse switch is electronically controllable at turn on and turn off, and eliminates the need for Pulse Forming Networks. The electronic pulse switch control is preferably used in combination with pulse voltage droop-compensating circuits that connect the switches to the primary windings. Furthermore, the transformer design is such that each primary winding only surrounds a portion of the total magnetic core cross section, giving an effect of a fractional turn primary.

Abstract: For energizing an X-ray tube in a diagnostic X-ray unit, a group of capacitors are each charged up to a voltage lower than that required by the X-ray tube, and then the capacitors are discharged one after another through the primary winding of a voltage step-up transformer in such a manner as to produce AC in the secondary winding which is then rectified and applied to the X-ray tube.