Power source for regulated operation of the deflection coil...

Details Power source for regulated operation of the deflection coil... Power source for regulated operation of the deflection coil...

2006-07-25

2006-07-25

Glick, Edward J. (Department: 2882)

X-ray or gamma ray systems or devices

Electronic circuit

X-ray source power supply

C378S137000

Reexamination Certificate

active

07082188

ABSTRACT:
A power source for the operation of a deflection coil for an electron beam of an x-ray tube has a voltage source and a bridge circuit that is connected with each end of the deflection coil, respectively via one power switch in series connection to opposite poles of the voltage source. A current tap taps a coil current signal proportional to the current through the deflection coil. An activation comparator and a deactivation comparator are connected with the current tap to which an activation current signal Iminand a deactivation current signal Imaxare supplied. The power switches are connected with the activation comparator and deactivation comparator such that they are closed in the event that the coil current signal undershoots the activation current signal Iminand opened in the event that the coil current signal overshoots the deactivation current signal Imax.

REFERENCES:
patent: 4104567 (1978-08-01), Peer et al.
patent: 6002453 (1999-12-01), Van Tuijl et al.
patent: 0 374 289 (1990-06-01), None

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