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Do you know what are the main forms of switching power supply?

source:Charger     Popular:adapter     release time:2021-07-14 11:46:38     Article author:sznbone    

  There are three key switching power supplies: unregulated (also known as brute force), linear regulated and switching. The fourth type of power supply circuit is called ripple adjustment, which is a collection of design schemes and "switch" design schemes, and it has a sub-project in itself. Non-standard power supply is the basic type, consisting of transformers, ballasts and low-pass filters. This type of power supply generally exhibits many ripple operating voltages (that is, the asymmetry of speed changes) and other AC and communication "noises" accumulated on the DC stabilized power supply.

Do you know what are the main forms of switching power supply?(图1)

  The linear stabilized power supply is only a "brute force" (unregulated) power supply, and then a triode power supply circuit that must work in an "active" or "linear" manner. Therefore, the linear stabilized power supply named as a typical linear controller is designed for It outputs a fixed voltage within a wide input voltage range, and it will simply reduce a lot of unnecessary input voltages so that the load can get the output voltage.

  This kind of excessive current will lead, which means it will not be able to keep the voltage stable. It can only reduce the excessively high voltage, and cannot fill the insufficient voltage of the power circuit part. Therefore, depending on the type of controller, the input voltage must be at least 1 to 3 volts higher than the required output. This means that at least equivalent to 1 to 3 volts minus the full load current will be mismatched according to the controller power circuit, which will cause a lot of heat.

  This makes the linear stabilized power supply very inefficient. And for heat, they use large heat pipe radiators, which makes it more and more bulky. Light weight, high efficiency, low price, and "clean", stable output voltage.


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