Switching Mode Power Supply S-200W-24V 8.3A Industrial Control Monitor LED Camera Communication AC Change Direct DC | Обустройство

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Power switch / switching power supply /24V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Working principle The working process of switching power supply is quite easy to understand, in the linear power supply, so the power transistor operating in the linear mode, and different linear power supply, switching power supply PWM power transistor is let in turn-on and turn off state in the two states, plus in the power transistor on volt ampere product is very small (at turn-on, low voltage, high current; turn off, high voltage, low current) / loss generated by the power device is the product of voltage on the power semiconductor devices. Compared with the linear power supply, the more effective working process of the PWM switching power supply is realized by chopping the input DC voltage into the pulse voltage whose amplitude is equal to the input voltage amplitude. Bert diagram of switching power supply Bert diagram of switching power supply The duty ratio of the pulse by the controller to adjust the switching power supply. Once the input voltage is cut into AC square wave, the amplitude can be increased or decreased by the transformer. The two increase in the number of winding transformer can increase the output voltage. At the end of the AC waveform after rectifying and filtering to obtain the output DC voltage. The main purpose of the controller is to keep the output voltage stable, and its working process is very similar to that of the linear controller. That is to say, the function blocks, voltage reference and error amplifier of the controller can be designed to be the same as linear regulator. The difference between them is that the output of the error amplifier (error voltage) passes through a voltage / pulse width conversion unit before driving the power transistor. Switching power supply has two main works: forward converter and boost converter. Although the layout of each part is very small, the work process is very different, and each has its own advantages in specific applications. Working principle The working process of switching power supply is quite easy to understand, in the linear power supply, so the power transistor operating in the linear mode, and different linear power supply, switching power supply PWM power transistor is let in turn-on and turn off state in the two states, plus in the power transistor on volt ampere product is very small (at turn-on, low voltage, high current; turn off, high voltage, low current) / loss generated by the power device is the product of voltage on the power semiconductor devices. Compared with the linear power supply, the more effective working process of the PWM switching power supply is realized by chopping the input DC voltage into the pulse voltage whose amplitude is equal to the input voltage amplitude. Bert diagram of switching power supply Bert diagram of switching power supply The duty ratio of the pulse by the controller to adjust the switching power supply. Once the input voltage is cut into AC square wave, the amplitude can be increased or decreased by the transformer. The two increase in the number of winding transformer can increase the output voltage. At the end of the AC waveform after rectifying and filtering to obtain the output DC voltage. The main purpose of the controller is to keep the output voltage stable, and its working process is very similar to that of the linear controller. That is to say, the function blocks, voltage reference and error amplifier of the controller can be designed to be the same as linear regulator. The difference between them is that the output of the error amplifier (error voltage) passes through a voltage / pulse width conversion unit before driving the power transistor. Switching power supply has two main works: forward converter and boost converter. Although the layout of each part is very small, the work process is very different, and each has its own advantages in specific applications.