| 摘要 |
<p>The method is for testing and monitoring inductive direct voltage loads for functioning and operating condition and is esp. applicable to domestic equipment switched by program control devices via amplifiers, pref. inverters. It enables the associated switching and control elements and cabling to be tested as well as the operating equipment. The control voltage which determines the operating mode, and which is applied to the load, is transiently passed by or cut off by the switching inverters (3,4). The resulting pulse shaped load voltage change, which is caused by the bad power variation associated with the switching process, is measured for height and, where required, for pulse duration. The transient control voltage variation is performed by an electronic control unit, e.g. a microcomputer. The signal voltage change is evaluated in the same unit.</p> |
