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Snubber Circuit Calculation for Triac based AC motor Control

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htekin42

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Dear All,

I am designing a circuit to control AC motor direction. I am using BTA16-800CW and I am using MOC3041 triac driver to drive it with microcontroller. I am using P275L40B MOV to protect triac but I am confused about snubber circuit. How can I determine the values of R and C values? Could you please explain the calculation of them?

Motor characteristics; 1/4HP 0.18kW 1,6A 220V 50Hz Run capacitor type AC induction Motor.

Circuit schematic is added
circuit.jpg

Thanks for helps
Best Regards.
 

Doctor_E

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Use the attached files, there are a lot of information and calculations
 

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