How to match the output voltage and current of AC-DC power adapter with equipment

The output voltage and current of an AC-DC power adapter need to be precisely matched with the voltage and current requirements of the equipment to ensure that the equipment can work properly. First, determine the voltage range required by the equipment. Different applications require different output voltages. Generally speaking, the output voltage range of AC-DC power adapters is relatively wide, ranging from a few volts to several tens of volts. When choosing an adapter, ensure that its output voltage is within the voltage range required by the equipment. For output current, it also needs to be chose according to the needs of the equipment. Different equipment requires different output currents. Generally speaking, the current range is from a few amperes to several tens of amperes. If the output current of the adapter is insufficient, it may cause the equipment to not work properly or have a decreased performance; while if the output current is too large, it may cause energy waste and equipment damage. When choosing an adapter, also consider indicators such as the load regulation performance and output ripple voltage of the power supply. Good load regulation performance can ensure that the output voltage and current remain stable under different load conditions. The output ripple voltage will affect the working stability and reliability of the equipment. The smaller the ripple voltage, the more stable the power output. In addition, pay attention to the influence of the input voltage range on the output voltage stability. AC-DC power modules are usually designed to work within a specific input voltage range, such as 85 - 265V AC. When the input voltage is close to the rated voltage of the module, the efficiency is higher and the output voltage is also relatively stable; while when the input voltage exceeds or is lower than the rated voltage, the efficiency will decrease and the output voltage may fluctuate.

The importance of efficiency and other indicators of AC-DC power adapter The efficiency, power factor, and electromagnetic compatibility and other indicators of AC-DC power adapters are of crucial significance. First, efficiency is one of the key indicators for measuring the performance of an adapter. A high-efficiency adapter can convert more input electrical energy into output electrical energy, reducing energy waste and lowering the operating cost of equipment. With the continuous progress of technology, people have higher and higher requirements for energy conservation and environmental protection. High-efficiency...