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Because the module power supply is easy to install and has many structural advantages, the design related to the module power supply often appears in the field of mobile communication and switching equipment. It can be seen that the module power supply is widely used. The DC-DC power module has high

For module power supply products with trim or adj (adjustable) output pins, the output voltage can be adjusted within a certain range through resistance or potentiometer, and the general adjustment range is ± 10%.Module power supplyFor the trim output pin, the center of the output potentiometer and

Several precautions for installing variable frequency power supply 1. Good smoothness and high efficiency during speed regulation. At low speed, the characteristic static closing rate is high and the relative stability is good.2. The ambient temperature of the frequency converter is generally -10 ℃ ~ 40 ℃, and the humidity is lower than 90. If the ambient temperature is higher than 40 ℃, the converter should be derated by 5 for every 1 ℃ increase. If the ambient temperature rises by 10 ℃, the se

The power supply that can provide a stable voltage and frequency is called AC stable power supply. At present, the work of most domestic manufacturers is to stabilize the AC voltage.Parameter adjustment (resonance) type

The power module is a power supply that can be directly mounted on the printed circuit board. Its feature is that it can provide power for application specific integrated circuits (ASIC), digital signal processors (DSP), microprocessors, memories, field programmable gate arrays (FPGA) and other digital or analog loads. Generally speaking, such modules are called point of load (POL) power supply system or point of use power supply system (pups). Due to the advantages of modular structure, modular

Generally, the minimum load limit of the module power supply varies from manufacturer to manufacturer, usually about 10%. Because the load is too light, the current carrying element is difficult to continue to flow, and the current is discontinuous, resulting in unstable output voltage. This is caused by the power supply itself.

1. Harmonic distortion of input rectifier circuitThe input end of switching power supply generally adopts bridge rectifier and capacitor filter circuit. The rectifier bridge can only be turned on when the pulsating voltage exceeds the voltage on the input filter capacitor, and the current is input f

The impedance characteristic of switching power supply module refers to that the power circuit composed of internal resistors, capacitors and inductors has blocking effect on AC current. The characteristic impedance of resistor is itself, and the resistance of capacitor and inductor to AC current is

1. Pay attention to power problemsFirst of all, there is the problem of power. Different power modules have different power. Some parts have a power of 3-300w, some parts have a power of 1-700w, and some parts have a power of 50-6000w. Only by purchasing such parts according to the needs of their ow

There are all kinds of EMI noise in 220v/50hz AC power grid or 115v/400hz alternator. Among them, artificial EMI interference sources, such as radio emission signals of various radar, navigation, communication and other equipment, will sense electromagnetic interference signals on the power line and