| 摘要 |
A portable x-ray system comprises an x-ray source (1); an internal power supply (3) for supplying an input voltage; and a voltage converter (2) in electrical connection between the power supply (3) and the source (1), the converter (2) being adapted to vary the input voltage from the power supply (3) to provide an output voltage useable in the x-ray source (1) to generate x-rays of a predetermined energy. The power supply (3) comprises a battery power store (7); a capacitor power store (6); and switching means (11) to selectively connect the power stores (7,6) to provide the input voltage to the voltage converter (2) during an exposure. <IMAGE> |
