Claudemir2019 Posted September 30, 2019 Report Share Posted September 30, 2019 I plan to build an engine speed controller, but in my city 127 volt power is provided.http://www.electronics-lab.com/project/ac-motor-speed-controller-using-u2008b/Is it possible to modify this project to 127 volts version?This project would suit me perfectly!Thankful! Quote Link to comment Share on other sites More sharing options...
admin Posted October 3, 2019 Report Share Posted October 3, 2019 According to the datasheet you can calculate the series resistance R1 using the formula below. This way you can use your desired voltage on the input. I don' t think you need to alter any other component. Quote Link to comment Share on other sites More sharing options...
Claudemir2019 Posted October 3, 2019 Author Report Share Posted October 3, 2019 Thank you very muchI will try. Quote Link to comment Share on other sites More sharing options...
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