Patent ID: 7082188
Filing Date: 2006-07-25
Classification: H05G

Abstract:
1. An X-ray device comprising: an X-ray tube having a cathode, that emits an electron beam, and an anode on which said electron beam is incident, and a deflection coil disposed to interact with said electron beam in a propagation path between said cathode and said anode, said deflection coil having two terminals; and a power source comprising a voltage source having opposite poles, a bridge circuit having terminals respectively connected to the two terminals of the deflection coil each via one power switch, said power switch connecting said deflection coil terminals in series with the opposite poles of the voltage source, a current tap that taps a coil current signal proportional to a current through the deflection coil, an activation comparator connected to said current tap supplied with an activation current signal, a deactivation comparator connected to said current tap and supplied with a deactivation current signal, and said activation comparator and said deactivation comparator closing the power switches if said coil current undershoots said activation current signal and opening said power switches if said coil current signal overshoots said deactivation current signal.