Power supply current testing in the production line of emergency luminaire circuits

In this paper a test method based on the measurement of the magnitude of the supply current spectrum is presented. The method is evaluated as a preprocessing test step for fast detection of faulty circuits. This method, along with a functional test method are utilized by a versatile system, which is used for production line test of emergency luminaire circuits. Main advantages of the method are the single test point and the single measured signal (power supply current) that are needed. Extensive comparisons were conducted between the functional test results and power supply current measurements acquired from the production line of emergency luminaire circuits showing the effectiveness of the method.