| 摘要 |
<p>An X-ray apparatus is disclosed which comprises an X-ray tube (16), a high voltage generating circuit (VAC1, 11 to 15) for applying a high voltage between the anode and the cathode of the X-ray tube (16), a filament heating circuit (VAC3, 17 to 23) for heating a filament of the X-ray tube (16), first switching element (35) connected between one terminal of said filament and the negative bus of said high voltage generating circuit, second switching element (36) connected between the other terminal of said filament and the negative bus of said high voltage generating circuit and an inverter circuit (31, 32, 33a, 33b) for alternately switching said first and second switching elements (35, 36) at a given period to switch the tube current paths.</p> |
