介绍了一种以8XC196MC 为内核的逆变电源系统。其逆变控制系统实现了全数字操作。逆变部分的SPWM 控制脉冲波形完全由8XC196MC 单片机生成,使用IR2130 实现对功率管的驱动和保护,频率电压可由数码管显示,可用串口与上位机进行通讯.该系统硬件电路简单，器件减少，结构紧凑，性价比高。经试验表明：逆变电源输出波形失真小，动态特性好，可靠性高。关键字：8XC196MC 逆变电路 正弦脉宽调制 波形发生器 控制电路Abstract: The inverter power system based on 8XC196MC is introduced. The controlling system is digital. SPWM control pulses are produced by 8XC196MC. Used IR2130 to drive and protect power transistor. Frequency and voltage are displayed. It can communicate with upper-computer. This system has the merits of simple hardware, compacted configuration, high output-stability, good dynamic characteristic and high dependability.key words: 8XC196MC; inverter circuit; SPWM; wave form generator; control circuit