高品质多路交流电源的研制

The Development of Multi-output AC Power Supply with High Quality

以两相、400Hz的纯净正弦电源为例,介绍了一种波形纯净、电压可调、相位可调、频率可调且具有功率输出能力的高品质多路交流电源的技术指标及其结构、原理、特点与实验结果。该电源的方波信号由基于AT89C2051的单片机系统产生,滤波电路采用带通滤波程控芯片MAX 267,功放电路采用音响功率放大器件LM1875。

Taking power supply with 2-phase, 400Hz and pure sine as an example, the technical index, the structure, principle, characteristics and experiment result of multi-output AC power with pure wave-form, adjustable voltage, adjustable phase, adjustable frequency and output capability of power were introduced. The square-wave signal of the power was generated by microchip computer system based on AT89C2051. MAX267 program control chip with general filtering wave was used in the filtering circuit, LM1875 power magnify part was used in power magnify circuit.