久久久久三级亚洲小电影国产|白云专区无码久久|亚洲国产精品VA免费|韩日精品探花

1. Very light load use

Generally, the module power supply has a minimum load limit, which varies from manufacturer to manufacturer, generally about 10%, because the energy storage element will have current discontinuity when the load is too light, resulting in unstable output voltage, which is determined by the working principle of the power supply itself of. However, if the user does have a light load or even no load, the most convenient and effective way is to add a certain dummy load, about 2% of the output power, which can be preset by the module manufacturer before leaving the factory, or the user can Install an appropriate resistor as a load outside the module. It is worth noting that if you choose the former, the module efficiency will be reduced. However, some circuit topologies do not have a minimum load limit.

2. Multiple output power distribution

Taking bidirectional products as an example, there are generally two types: one is a dual-channel balanced load, that is, the currents of the two channels are the same; the other is an unbalanced load, that is, the main and auxiliary channels have different load currents, the main circuit is large, and the auxiliary channel is small. For this type of product, it is recommended that the power ratio of the auxiliary circuit to the main circuit is 1≤5≤1≤2, within this range, the voltage stability of the auxiliary circuit can be guaranteed (it can be less than 5%), otherwise the auxiliary circuit voltage is too high or low When choosing the power supply of multiple output modules, pay attention to the power distribution between different outputs. On the other hand, if the dual loads are different, try not to choose a balanced load module power supply, because this power supply is designed for symmetrical loads. If the load is unbalanced, the voltage accuracy of the auxiliary circuit is not high.

3. Minimize the temperature rise of the module power supply

The operating temperature of the internal device directly affects the life of the module power supply. The lower the device temperature, the longer the life of the module. Under certain working conditions, the loss of the module power supply is certain, but the temperature rise can be reduced by improving the heat dissipation conditions of the module power supply, thereby greatly extending the service life of the module. In addition, in the case of high ambient temperature or poor air circulation conditions, modules should be used to reduce power consumption to reduce temperature rise and extend service life.

4. Reasonable installation to reduce mechanical stress

The extraction method of the module power supply is a metal pin, and the module power supply is connected with the external circuit, and the metal pin is connected with the internal circuit of the module power supply by welding. In some special occasions, the mechanical vibration intensity is high, especially when the radiator needs to be installed on the high-power module power supply, the situation is more serious. Although the thermal insulation rubber in the module power supply can play a good role in buffering and protecting the components, the solder joints may not be able to withstand the strong vibration stress and break, resulting in failure of the module power supply. At this time, additional fixing and buffering measures must be taken on the basis of welding.

In short, the module power supply is the same as other components. Only through careful selection and reasonable application can its performance be maximized, reliability can be fully guaranteed, and the module power supply will also be more widely used!