The Application of Switching Power Supplies in Professional Power Amplifiers
As is well known, the development of modern switch mode power supply technology is transforming traditional old electrical equipment on a large scale, widely entering various fields of national economy and human life. It has excellent qualities such as high power density, small size, light weight, high efficiency, high reliability, low noise, and low pollution, greatly saving electricity, reducing material consumption and costs, and significantly reducing electromagnetic interference. Just like the popular high-tech value-added products in our daily lives such as "variable frequency air conditioners", "refrigerators that save more than 40% of energy", and common industrial products such as "arc welding, electrolysis, heating, charging, ultrasound, and motor speed regulation", it is the result of using high-frequency switching power supply technology!
Let's now review: our modern high-frequency high-power switching power supply technology is actually a complex technology with a wide range of knowledge, a large span, high difficulty, and * * risks. It can transform the strong and coarse electricity provided by the power grid into high stability precision and fine electricity required by various electrical equipment and instruments, providing different specifications of voltage and current values. It is an important central power supply system in modern electronic devices. According to statistics, nearly half of the common faults in electrical equipment are caused by power supply issues, and I believe this is not an exaggeration. Because the content involved in modern high-frequency switching power supplies spans multiple disciplines, such as intelligent control chip systems for microelectronic precision processing, and increasingly updated high-performance power devices and high-frequency transformer magnetic materials, amorphous and microcrystalline fields, it is sufficient to prove the high-tech value of this technology, which is beyond the reach of ordinary enterprises. Due to time constraints, further elaboration will not be provided here.
The professional power amplifier switch power supply I am talking about now is a new type of power supply that eliminates the contradiction of insufficient power supply for the dynamic instantaneous output of the power amplifier due to the need to adjust the switch pulse width caused by the need for voltage stabilization, by removing the large loop feedback on the basis of modern high-frequency switch stabilized power supply. It is a newly developed technology FPA brand professional power amplifier dedicated switching power supply with no feedback, no voltage regulation, and good floating load driving ability, which is the theme I will talk about today.
