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Switch power supply principle
The switching power supply is an indispensable key component of various types of electronics. The advantages and disadvantages of its performance are directly related to the technical indicators of electronic equipment and whether they can work safely and reliably. It is widely used in industrial, military, scientific research, communications, medical care, and various household appliances. The development and application of switching power supply is of great significance in saving energy, saving resources, and protecting the environment. Next, I will introduce the basic principles and characteristics of switching power supply.
Switch power composition
The main circuit of the switching power supply is composed of input waves inhibitory circuit, electromagnetic interference filter circuit (EMI), input rectifier filter circuit, PWM controller circuit, output rectifier filter circuit, and sampling feedback circuit.
Switch power supply work principle
The switching power supply is the use of electronic switching devices (such as crystal pipes, field effect pipes, silicon gate flow pipes, etc.) to control the electronic switching device to keep "connect" and "turn off" The input voltage performs the pulse adjustment, thereby realizing DC/AC, DC/DC voltage transformation, and the output voltage adjustment and automatic voltage voltage. Due to the complex switching power circuit, there are many protection circuits. Therefore, it is important to be proficient in the basic composition and working principle of switching power supply.
Switching power input parameters
01 input voltage
The switching power input terminal allows the connection to the voltage.
02 input current
The switching power input terminal rated load is the maximum current flowing.
03 Input frequency
Switch power input terminal allowed the city electrophic frequency.
04 Langyong current
At the moment of power, the current of the main circuit is the current generated by the capacitor.
Switch power output parameter
01 rated voltage
Refers to the output voltage of the switching power supply normally
02 rated current
The maximum current allowed by the switching power supply for a long time
03 rated power
The maximum output power allowed by the switching power supply p = u*i (u is the rated voltage, i is the rated current)
04 ripple noise
The ripple refers to the communication component left over by the incomplete flow filtering in the power supply. This AC component is called a ripple. Noise refers to a high -frequency interference.
05 efficiency
Output power/input power*100%
06 linear adjustment rate
When the input voltage fluctuates, the change rate of the output voltage
07 load adjustment rate
The output voltage changes when the load is changed.
Features of mibbo switching power supply
Mibbo switch power supply: convenient guide rail installation, convenient for loading and unloading. "Three fulcrum" M4 large pores installation. Unique heat dissipation schemes can run stably even if high temperature work conditions. Appearance patent, beautiful and generous, all aluminum design. Super -quality texture, thick material, guarantee heat dissipation performance. Configure the terminal protective cover to ensure connection safety.
High -quality and efficient industrial power supply has more than 13 years of market inspection, covering almost all automated control requirements, and reliability and security have been confirmed by facts. More than 10 million MIBBO products have operated in global industrial security and stability.
