Abstract: Provided is an inverter power supply including a measurement function of measuring deterioration of a rectifier element such as a diode. The inverter power supply includes a step-down stabilization unit that applies a reverse voltage increasing gradually to diodes, an isolation amplifier that detects a current value of a current flowing to the diodes when the reverse voltage is applied, and an inverter control unit that decides that the diodes have deteriorated when the detected current value is larger than a determination current value for determining deterioration of the diodes, and decides that the diodes have not deteriorated when the detected current value is smaller than the determination current value.

Abstract: Provided is an inverter power supply including a measurement function of measuring deterioration of a rectifier element such as a diode. The inverter power supply includes a step-down stabilization unit that applies a reverse voltage increasing gradually to diodes, an isolation amplifier that detects a current value of a current flowing to the diodes when the reverse voltage is applied, and an inverter control unit that decides that the diodes have deteriorated when the detected current value is larger than a determination current value for determining deterioration of the diodes, and decides that the diodes have not deteriorated when the detected current value is smaller than the determination current value.

Abstract: A coating defect detecting and marking system is provided for automatic detection and marking of a coating defect on the body surface of a car. The system detects a spot to mend such as a flaw or coating defect on the outer surface of a coated car body and marks the position of the spot to mend. There are provided along a production line along which the car body is conveyed an imaging block to detect a spot to mend such as a flaw or coating defect on the outer surface of the coated car body, and a piezo pump to provide a jet of marking solution to a corresponding position on the car body surface to the spot to mend detected by the imaging block.

Abstract: The present invention relates to a wheel alignment measuring apparatus which measures the toe-in length or angle and camber angle of each tire (17) of a car.The wheel alignment measuring apparatus can be used to measure the distances to various points on the surface of the tire (17) by means of the light of a predetermined wavelength emitted from the light-emitting means (4) and to determine the toe-in angle or length and camber angle of the tire (17) based on the measured distances. In other words, such measurement can be done without any contact with the tire (17) under inspection, thus it is possible to prevent any trouble which would occur when such measurement is done in contact with the tire, such as error caused by the oscillation or the like of the tire (17).