As a result, one testing requirement that has been growing in importance is the method of loading the power supply under test. The need for a higher degree of load control due to test sophistication, such as the need for computer pro-grammability, has increased the demand for electronic load instruments.
However, power supply test systems based on standard products afford greater benefits. These systems are more reliable and provide repeatable, high performance measurements because of their low noise environment.
Power supplies are used in a wide variety of products and test systems. As a result, the tests performed to determine operating specifications can differ from manufacturer to manufacturer, or from end user to end user. For instance, the tests performed in an R&D environment are primarily for power supply design verifica-tion.
In contrast, power supply testing in production environments primarily focus on overall function based on the specifi-cations determined during the products design phase. Automation is often essential due to large volume testing, which requires high test throughput and test repeatabil-ity.
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