| 摘要 |
<p>A control circuit is used to regulate the electrode heating current in an X-ray tube. The necessary value is calculated from the tube voltages and currents normally used. The heating current nominal value is a function of the X-ray tube voltage and current. The nominal value is produced synthetically from heating currents obtained at a lower and upper tube voltages used for normal examinations, and depending on the tube currents, on the above tube voltages, and on a factor depending on the tube parameters and on the set tube voltage.</p> |
