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You are here: Home / Replies / you need 3 saparate ZCD –

you need 3 saparate ZCD –

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Microcontroller › PIC › PIC 16F676 C CODE for analog i/p signal detect › you need 3 saparate ZCD –

October 19, 2017 at 1:23 pm #14674
Ashutosh Bhatt
Participant

you need 3 saparate ZCD – zero cross detector circuits one for each phase

the output of ZCD is continuous pulses till AC is present

as soon as AC gone – the pulses will disappear

so continuously monitor pulses from 3 sides and when any one or more is absent turn on the LED 

thats all

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