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施耐德TSXSCP111
TSXSCP111
TSXSCP111输出脉冲的宽度是通过电容CT上的正极性锯齿波电压与另外两个控制信号进行比较来实现。功率输出管Q1和Q2受控于或非门。当双稳触发器的时钟信号为低电平时才会被选通,即只有在锯齿波电压大于控制信号期间才会被选通。当控制信号增大,输出脉冲的宽度将减小。(7)脚接地端,(8)、(11)脚是Q1和Q2内部开关管的集电极,在此电路中接电源,(9)、(10)脚为Q1、Q2的发射极,作开关管驱动输出端,接下图中Q1与Q2外部放大电路。以驱动后极推挽电路。(12)脚电源端,(13)脚为输出控制端,接(14)脚基准电压时两路输出脉冲相差180方位,每路输出量大约200MA的驱动推挽或半桥式电路。(15)、脚第二组放大器的反相输入端,接基准电压, (16)脚同相输入端,检测电源电压。当电压过高超过(15)脚参考电压时,(3)脚输出高电平,电路进入保护状态。
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