Patent ID: 8581201

Claim:
A power supply apparatus for a detector, for providing a plurality of power supplies for a light or radiation detecting detector having a semiconductor layer for converting light or radiation information into charge information, an active matrix substrate having a plurality of switching elements for reading the charge information from the semiconductor layer, and a driving device for driving the active matrix substrate for reading, the power supply apparatus comprising: a power output device capable of individually outputting the plurality of power supplies to be provided for the detector; a detection device for detecting a power supply state of a utility power source for operating the apparatus; a control device for carrying out an abnormal stopping process to stop the power supplies at the power output device in a predetermined order upon determination based on a result of detection by the detection device that an abnormality has occurred; and an electric storage device for supplying electric power to the control device, when the control device determines that an abnormality has occurred, to permit the control device to carry out the abnormal stopping process; wherein the power supplies the power output device is capable of individually outputting include a plurality of driving power supplies to be provided for the driving device; and in the abnormal stopping process, a driving power supply of highest voltage among the driving power supplies is stopped before the other driving power supplies.