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Linear Voltage Regulator Composed Microprocessor Power Suppl

2017-03-15 10:48  
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Linear Voltage Regulator Composed Microprocessor Power Supply Circuit
Linear voltage regulators composed microprocessor power circuit is shown in the graph below.It simly consititues of 2 MAX666. Power supply for the CPU and A/D converter is A2,and that for RAM and real-time clock is A1. The output voltage Vo of MAX666 is controlled by VSET , if VSET is connected with GND, the output voltage is 5V,which is fixed. If one uses resistance to part the pressure Vo, the partial voltage will be added to VSET, thus it could be output through programming.