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power factor meter design nd construction

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manasusman

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i wanna ask about the availability of current transformer and voltage transformer in the market as i need it in low voltage assembly i.e 25 volts ac. actually i need to make power factor meter which require a current transformer and a voltage transformer, each of which gives waveform out of which zero crossing point will be extracted using op-amp and then ultimately using microcontroller calculate the power factor. Is this the good concept if not then would u suggest some other method plxxxx.
 

tell us the voltage range and power range of the setup i feel that all things are available in the market

the ratings are available online try to check it out for your setup
 

voltage range for potential transformer is 25/5v and for current it would not be more than .1A
these ratings are required for the op-amps i would have to use for this circuit.....is it an operating plan???
 

you need a transformer having turns ratio of 5V i think it is available in the market

PS the second part of the description is Greek and Latin to me so kindly bare with me
 

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