Why can we regard DC power supply as shorting in AC circuit?

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kevin_yuann

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AC CIRCUIT

In analyzing the AC circuit, why can we regard the DC power supply as shorting to ground. Who can tell me the reason?
 

Re: AC CIRCUIT

Hi,

This is because in real world, DC power supply include decoupling capacitors between + and ground. These capacitors are short cicuits for AC signals
 

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