Abstract: An automatic control system is provided for regulating the emission of an X-ray tube of the type which is activated by the heating of a cathode filament by passing current through the filament, and which emits X-ray radiation systematically in accordance with the amount of tube current flowing between the anode and cathode of the tube, with a relatively high voltage being applied between the anode and cathode. Current is passed through the filament and a tube current sensor is coupled to the X-ray tube for developing a tube current signal representative of the magnitude of the current flowing between the cathode and anode of the X-ray tube. Coupled to the current sensing circuit and responsive to the tube current signal is a circuit for generating a filament current control signal.

Abstract: An X-ray apparatus with improved housing of components comprises a pedestal with an X-ray table thereon, and power components of the apparatus housed within the pedestal. Those power components comprise the high voltage X-ray transformer and the power control for the same. An operator's control unit is remote from the pedestal and is connected to components within the pedestal by a low voltage cable. The control unit may be mounted on a table, wall, or other suitable location. The control unit contains the components that the X-ray technician needs to select the factors that determine the X-ray exposure.

Abstract: X-Ray apparatus comprises a table with an improved top having opposed longitudinal frame members at its sides and a comparatively thin panel extending therebetween. The thin panel is capable of supporting substantial weight due to the panel being maintained in continuous tension. This tension is effected by fasteners which secure end members to the longitudinal frame members and impose forces in opposite directions on the panel transversely thereof. The thin panel permits the patient to be positioned closer to the plane of the X-ray film in the bucky below the table top and also provides a structure which absorbs a relatively small amount of X-ray radiation.