FAQ
What is inrush current?
2023-07-30This peak current is much greater than the steady-state input current due to the rapid charging of the input filter capacitor. The power supply should limit the surge level that AC switches, bridge rectifiers, fuses, EMI filter components can withstand. Switching the loop repeatedly, the AC input voltage should not damage the power supply or cause the fuse to blow.
FAQWhy should the power adapter be subjected to aging test?
2023-07-30During the strict aging test of the the module power supply production, the module power supply is generally operated at full load for a long time. How long is this duration? Generally 24 hours or 48 hours.
FAQSelection criteria for medical power supplies
2023-11-04With the development of science and technology, the types, quantities and functions of medical electronic equipment are becoming more and more perfect, and these devices are inseparable from the power supply, so the performance of the power supply plays a key role in the performance of the product.
FAQImprovement Of High-power supply Low-temperature Start-up Problem
2023-11-04For larger power supplies (above 60W), if the lower limit of the required working temperature range is -40°C, it is prone to the phenomenon that the power supply cannot start normally under load with low voltage input (90Vac) at -40°C.
FAQImprovement Of Lightning Surge Limit Test
2023-07-30Frist，conduct a power on test on the lightning strike limit defective products, and the products have no output. Unpack the power supply and turn it on again, check that there is no voltage across the electrolytic capacitor C1, measure the components between C1 and the AC PIN terminal, and find that the fuse F1 is open (as shown in the figure below).
FAQWhat should be paid attention to when placing the power supply?
2023-07-30Most low-power supplies without internal fans are designed to be placed horizontally. If there is a problem with the system structure, it is necessary to place the power supply vertically, because the heat dissipation issue should consider the output power at a higher ambient temperature.
FAQ