| 摘要 |
<p>A high voltage transformer (Tr) comprises a primary winding (Lp), secondary windings (Ls1, Ls2, Ls3), and diodes (Di) coupled between successive secondary windings (Ls1, Ls2, Ls3). A polarity of the diodes (Di) and the secondary windings (Ls1, Ls2, Ls3) is selected such that the flyback voltages (Vfs) across each of the secondary windings (Ls1, Ls2, Ls3) are summed via conductive diodes (Di) during at least part of a flyback period (Tf) for generating a high voltage (EHT). A damp-circuit (1) comprises a rectifier element (D), a load (L), and a further winding (Ls4) of the high voltage transformer (Tr). These elements are arranged with respect to one of the secondary windings (Ls1, Ls2, Ls3) such that the further winding (Ls4) and said one of the secondary windings (Ls1, Ls2, Ls3) form a capacitance (Cd) across the load (L), and such that the solide (D) is non conductive during the flyback period (Tf). In this way, electrical oscillations of the high voltage transformer (Tr) are damped.</p> |
