X-ray system signal derivation circuits for heat unit...

Details X-ray system signal derivation circuits for heat unit... X-ray system signal derivation circuits for heat unit...

H - Electricity

05

G

355/37

H05G 1/26 (2006.01)

Patent

CA 1151314

-59- "X-RAY SYSTEM SIGNAL DERIVATION CIRCUITS FOR HEAT UNIT INDICATORS AND/OR CALIBRATION METERS" ABSTRACT OF THE DISCLOSURE Signals as the milliampere and kilovolt signals are monitored from the X-ray tube system via the high ten- sion transformer thereof. These signals may be connected to a heat unit indicator or a calibration meter or both. With the heat unit indicator, the heat level in an X-ray tube anode is monitored and referred to the level corres- ponding to the ambient room temperature as zero reference. As successive single exposures or series of exposures are made, the X-ray tube heat loading is automatically monitor- ed and displayed so that the operator is aware of the situa- tion at all times. The cooling characteristics of the tube are automatically taken into account and reflected in the reading. If desired, a calibration meter may be connected to the signal derivation circuitry to measure and indicate readily and easily, a plurality of operating parameters. The circuitry includes automatic scaling device for main- taining the relatively accurate signals required for the accurate operation of the heat unit indicator and the cali- bration meter.

334636

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