I am working on a project in which i need to calculate instantaneous values of current and voltage.
For Current: If i use the CT, its secondary will provide AC current, and due to the negative cycle my ADC would not detect that negative voltage. If after CT i use bridge rectifier, then i will get DC value from which i can only calculate RMS value, but i need instantaneous values.
For Voltage: If i use step down transformer, nd then use bridge rectifer again i would get DC and i can calculate instantaneous value again.
If i clamp the voltage to bring all the voltages to positive level, then ADC would work but i would need another small voltage source, which voltage may not remain constant when talking about months nd so ..
Plz provide me a circuit diagram for this. THanks