obtain dc from biased ac source

[franticEB]

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?

 

[KlausST]

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

 

[FvM]

Did you try LC filters?