The research and development of power amplifier started with switching power supply. Because of the simple circuit, shock resistance, low failure rate and low cost, ring transformer power amplifier can be applied. With the rhythm of music, the high-power amplifier is completely driven by large current, which is high and low, and the impact resistance and overload of ring transformer are much higher than that of switching power supply.
? Ring transformer has higher power than switching power supply, and there is no interference at high frequency. Of course, switching power supply can be used instead at low frequency. Ring transformer is a ring core, the biggest advantage is less magnetic leakage and high efficiency, followed by long distance between primary and secondary poles, less mutual interference, pure sound and good heat dissipation. ?
? Therefore, there are many ring transformers used in audio power amplifiers. The design of Shengyuan ring transformer is flexible, and the parameters can be changed at any time according to specific customization requirements.
? Strictly speaking, any power transformer can achieve the best quality. Ring transformer, EI transformer, R transformer and C transformer all have their own advantages and disadvantages. Structurally, ring transformer can achieve the minimum magnetic leakage, but from the aspect of sound perception, EI transformer can make the medium frequency density sense better. In terms of magnetic saturation alone, EI transformer is better than ring transformer, but ring transformer is better than EI transformer in efficiency. In the end, we will reduce our shortcomings and give full play to our advantages.
some people say that the ring transformer is easy to be magnetically saturated, so why not try to make it difficult to be magnetically saturated? The ring transformer will be easily saturated if the construction technology is immature or in order to save costs. Similarly, carefully building EI transformer can also achieve high efficiency. C-type transformer is the predecessor of ring transformer, with short magnetic circuit, high efficiency, less copper loss and iron loss than EI transformer, small volume and weight, and convenient installation and use. The disadvantages are relatively high manufacturing cost and poor DC saturation resistance.
it is good for R-type transformer to be used as the power supply of low-current front-stage power amplifier and CD player, but it is obviously not suitable for the power supply of rear-stage power amplifier. Because the structural form of R transformer itself is not easy to change, ring transformer and EI transformer can easily make the sound perfect by changing the structure.