X-ray tube preheat control

Details X-ray tube preheat control X-ray tube preheat control

2006-03-21

2006-03-21

Ho, Allen C. (Department: 2882)

X-ray or gamma ray systems or devices

Electronic circuit

X-ray source power supply

C378S101000, C378S107000, C378S111000, C378S114000

Reexamination Certificate

active

07016468

ABSTRACT:
A current feedback circuit in a dental imaging apparatus, which measures the x-ray tube current produced by the x-ray filament. During preheat, when the tube current is sensed to be appropriate for production of a constant rate of electrons, preheat is stopped, and diagnostic radiation emission begins. This circuit eliminates a fixed amount of preheat pulses which contribute unusable radiation during preheat of the filament in prior art systems.

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