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通过单片机控制PWM占空比,12V转0-10V 调光源

最近要做一个12VDC转0-10V可调输出的调光源,这个控制是一个远程控制的方案,通过调节单片机PWM的占空比,改变输出,我有尝试去用运放去做,不过线路不够稳定,求大家给一个可靠的方案,或者TI是否有合适的芯片可以做,推荐一下!感谢啊!!!