翻译以下论文段落(别用翻译软件那一类的要专业英语人士!3Q!)
来源:百度知道 编辑:UC知道 时间:2024/06/14 01:43:14
Power amplifier is a power conversion circuit, under the action of the input signal, transistors into DC power supply of energy, with the input signal into changes in low-frequency power amplifier output power given to the load, its sub-stage preamplifier (pre-incentive level and motivation level) and power amplification, and two parts. The design for high-power MOS tube as the core original pipe, using discrete components and integrated operational amplifier combines the low-frequency power amplifier design. Pre-amplification level the main task of the completion of the small-signal voltage amplification at the same time requiring low-noise, low temperature drift. Therefore chosen as a low-noise NE5532 preamp can be a very good noise suppression device itself. According to the requirements of efficiency (greater than 55%), power amplifier stage with Class-AB power amplifier circuit. AT89S52 as a display module to control the core of achieving power amplifier output power, DC power