How to mesure the AC voltage in PIC ADC without using DC i.e Capacitors

DHANANJAYA L said:

Dear Sir I am have to measure analog voltage in PIC ADC but I have to connetct directly from step down transformer hig voltage to 5 volts to ADC . I have connected a this supply voltage but it will +ve and -ve cycles i want only positive cyles. I am using op-amp for peak detector but I dont have any much more ideas please suggest a accurate vale produce the voltage to PIC ADC

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abhi_tandon80 said:

what is the voltage from transformer use potentional divider biased between half the voltage for +ve and -ve cycles

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