Electricity: measuring and testing – Electric lamp or discharge device – Vacuum tube
Patent
1979-08-30
1981-10-27
Tokar, Michael J.
Electricity: measuring and testing
Electric lamp or discharge device
Vacuum tube
250408, 250409, G01R 31024
Patent
active
042976383
ABSTRACT:
Signals as the milliampere and 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 exposures 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 includes automatic scaling device for maintaining the relatively accurate signals required for the accurate operation of the heat unit indicator and the calibration meter.
REFERENCES:
patent: 2512193 (1950-06-20), Zavales
patent: 3325645 (1967-06-13), Splain
patent: 3333104 (1967-07-25), Bougle
patent: 3783287 (1974-01-01), Fulton
Ade Stanley G.
Tokar Michael J.
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