Registers – Transfer mechanism – Traveling pawl
Patent
1974-11-20
1976-06-01
Gruber, Felix D.
Registers
Transfer mechanism
Traveling pawl
250413, 250416R, 317 40R, 324142, G06G 756, H02H 504
Patent
active
039611736
ABSTRACT:
Apparatus to indicate the temperature of an X-ray tube target includes an analog storage circuit to simulate the heat energy stored. Input signals representing the current and the voltage of the electron beam in the tube are multiplied to give a signal representing the instantaneous power input. The power signal is integrated in the storage circuit to give a temperature signal representing the total heat input. The temperature signal is dissipated by a cooling curve circuit representing the heat loss with time. An indicator reads the temperature signal.
Input voltage and current signals are processed to refer them to ground before multiplication. The current signal is corrected to set its zero value. The voltage signal derived from a transformer primary is corrected for transformer regulation. To eliminate spurious inputs the power signal is gated to the storage circuit only when a measured current is flowing. Multiple storage circuits indicating a number of tubes remember the temperature of their own targets while the power signal and the temperature indicator are being used with another storage circuit.
REFERENCES:
patent: 3634871 (1972-01-01), Siedband et al.
patent: 3746851 (1973-07-01), Gilbert
patent: 3747605 (1973-07-01), Cook
patent: 3764908 (1973-10-01), Elms
patent: 3766391 (1973-10-01), Siedband et al.
patent: 3775683 (1973-11-01), Barta et al.
patent: 3838285 (1974-09-01), Siedband et al.
Perry John T.
Schmutzer Joel J.
Cole Stanley Z.
Gruber Felix D.
Herbert Leon F.
Nelson Richard B.
Varian Associates
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