Yueqing Aultop Electrical Co.,Ltd is located in,Liushi,Yueqing,Zhejiang,China,We area high-tech enterrises soecialized in ,including designing, developing, producing ...
Most switch-mode power supplies rely on a PWM (pulse-width-modulated) output that is controlled via voltage feedback. A 555-timer IC can inexpensively perform PWM. The circuit in Figure 1 shows how to ...
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