obtain dc from biased ac source

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franticEB

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Hi,
i've to design a circuit able to use dc component of ac biased voltage in order to power two different kind of load (ac load as lamp and a dc one).





what kind of circuit could be used to do the job?

Could you help me please?
 

Hi,

i think this is homework.

DC is considered to ba a LOW frequency. 0 Hz.

So you need one filter to pass the DC and you need a filter to pass th AC.
The one is called low pass filter, the other high pass filter.
Each filter has to suppress the other frequency component.

What electrical/electronic divices do you know that have frequency dependent resistance?

Google for it to find your own solution.

Klaus
 

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