Difference between switching power supply and analogue power supply
Analogue power supply: that is, transformer power supply, through the core, coil, the number of turns of the coil determines the ratio of the voltage at both ends, the role of the iron core is to transfer the changing magnetic field, (our) main coil at a frequency of 50HZ to produce a changing magnetic field, this changing magnetic field through the core to the sub-coil, in the sub-coil on the induced voltage, and so the transformer to achieve the transformation of the voltage.
Disadvantages of analogue power supply: the coil, the iron core itself is a conductor, then they will be in the process of transforming the voltage due to self-induced current and heat (loss), so the efficiency of the transformer is very low, generally not more than 35%.
The difference between switching power supply and analogue power supply
Audio equipment amplifier in the application of the transformer: high-power amplifier needs transformer to provide more power output, then, only through the increase in the number of turns of the coil, core volume to achieve, the increase in the number of turns and the volume of the core will aggravate its loss, so the transformer of the high-power amplifier must be made very large, which will lead to: bulky, heat generation.
Switching power supply: before the current into the transformer, through the switching function of the transistor, we usually 50HZ current frequency to tens of thousands of HZ, at such a high frequency, the magnetic field changes the frequency also reaches several tens of thousands of HZ, then, you can reduce the number of turns of the coil, the core volume to obtain the same voltage conversion ratio, due to the number of turns of the coil, the core volume is reduced, the loss is greatly reduced, the general efficiency of switching power supplies Reach 90%, and the volume can be made very small, and the output is stable, so the switching power supply has analogue power supply is difficult to achieve the advantages.
Audio equipment - amplifier in the application of switching power supply: switching power supply description process has shown the advantages of switching power supply, so even if it is a high-power amplifier, switching power supply can be done as well as very fine, compact, the current domestic digital amplifier to Shenzhen Cuipas digital audio equipment company's digital power amplifier * for **, they have developed to the T class of purely digital amplifiers, and the next generation of S class amplifiers are also in the R & D. For details, please refer to the following information Please refer to the following information:
Digital Power Supplies
In the simple to use, parameter change requirements are not much of an application, analogue power supply products are more advantageous, because of its application specificity can be achieved through hardware curing, while in the more controllable factors, real-time response speed faster, the need for more than one analogue system power management, complex high-performance system applications, digital power supply has an advantage. In addition, in complex multi-system operations, compared to analogue power supplies, digital power supplies are programmed through software to achieve multiple applications, and their scalability and reusability allow users to easily change operating parameters and optimise the power supply system. It also reduces the number of peripheral devices through real-time overcurrent protection and management.
Difference between switching and analogue power supplies
In the complex multi-system business, compared with analogue power supply, digital power supply is programmed by software to achieve multi-faceted applications, and its scalability and reusability enable users to easily change the working parameters and optimise the power supply system. It also reduces the number of peripheral devices through real-time overcurrent protection and management.
Digital power supplies are controlled by DSPs and MCUs. Relatively speaking, DSP-controlled power supply using digital filtering, MCU-controlled power supply can better meet the complex power needs, faster real-time response time, power supply voltage regulation performance is better.
What are the benefits of digital power it is firstly programmable, such as communication, detection, telemetry and all other functions can be achieved by software programming. In addition, digital power supply has high performance and high reliability, very flexible.
