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NE5532-Howland恒流源

Other Parts Discussed in Thread: NE5532

采用NE5532做恒流源,并用S9013扩流电路如下图,电路在工作时(电路上电时输入100mV直流信号,输出用万用表短接到地并测量输出电流)S9013烧毁,根据手册描述9013的IC电流可以500mA,输入100mV直流信号理论对应输出100mA电流,实际却会烧毁9013。这是因为三极管工作时电源直接通过R6短路到地了吗?有什么办法可以解决这个问题使电路可以输出400mA左右的电流呢?