how can check3 phase using mcu

[balvendrajat]

thanks a lot
i have also a problem that how can i check 3 phase using micro controller, means a microcontroller circuit that only work in a three phase . please give me some idea

 

[Easyrider83]

Use 3 zero crossing circuits for each phase.
**broken link removed**

 

[balvendrajat]

problem is that i control 3 phase motor using GSM for this first i want to check all 3 phase must be available if there is unbalancing then the circuit will not be work. it will be work only when 3 phase are available at there rated value