...voltage sampling circuit；motor drive circuit；opening-closing position detection circuit；software design；[gap=120]关键词：微型断路器；过、欠电压保护；自复式；电压采样电路；电机驱动电路；分合闸位置检测电路；软件设计；分断能力 ..
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In part of hardware design, voltage and current sampling circuit, IGBT driving circuit communication and man-machine interface circuit are designed.
在硬件设计中对电压、电流采样电路，IGBT驱动电路以及通讯和人机接口电路进行了设计。
The overall hardware design scheme is performed, such as DSP 3. 3V power, voltage and current sampling module, IGBT driving circuit, I/O signal processor, fault detection module and COM circuit etc.
对系统硬件设计的DSP 3．3V电源的获取、电压电流采样模块、IGBT 驱动、一般I／O信号的处理、故障监测和串口通信电路进行了研究分析。
The linear sampling circuit of direct current bus and the hysteresis voltage comparator circuit are confirmed.
确定了直流母线电压线性采样电路以及迟滞电压比较电路。
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