How does the burn-in test for power supplies work?

Before delivery, PULS subjects every power supply to an endurance test at an increased ambient temperature as part of the manufacturing process. This is known as a burn-in test. The burn-in test is carried out for quality assurance purposes.

During the burn-in test, the power supply is operated cyclically under the nominal load and at an increased ambient temperature (typically 60°C ± 5°C) for between 2 and 8 hours. The typical input voltage is 100 V AC and 230 V AC, each for half of the test period. The burn-in test allows devices with early failures to be identified and removed before delivery.