X-Ray system signal derivation circuits for heat unit indicators

Details X-Ray system signal derivation circuits for heat unit indicators X-Ray system signal derivation circuits for heat unit indicators

1981-07-27

1983-05-31

Tokar, Michael J.

Electricity: measuring and testing

Electric lamp or discharge device

Vacuum tube

324402, 324409, 378101, 378117, G01R 31024

Patent

active

043863205

ABSTRACT:
Signal as the milliampere and/or kilovolt signals are monitored from the X-ray tube system via the high tension 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 corresponding to the ambient room temperature as zero reference. As successive single exposures or series of exposure are made, the X-ray tube heat loading is automatically monitored and displayed so that the operator is aware of the situation 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 optionally includes an automatic scaling device or other provisions, for maintaining the relatively accurate signals required for the accurate operation of the heat unit indicator and the calibration meter. This device may be in the form of an individual instrument module connectable to any X-ray machine for monitoring KV waveforms.

REFERENCES:
patent: 3770963 (1973-11-01), Keith
patent: 3842280 (1974-10-01), Herrick
patent: 3939352 (1976-02-01), Mester
patent: 3974385 (1976-08-01), Grim

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