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    speed control of single phase induction motor with TRIAC

    i want to use a 1µF capacitor to start the motor with a TRIAC to control the speed. Does anyone have the TRIAC circuit

    •   Alt17th October 2011, 08:11

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    Re: speed control of single phase induction motor with TRIAC

    i want to use a 1µF capacitor to start the motor with a TRIAC
    and
    TRIAC to control the speed
    Do you want two separate circuits for starting and speed controlling?

    This article gives a few circuits with application notes.
    http://www.st.com/internet/com/TECHN...CD00003856.pdf
    And here is project with PCB layout, too.
    Downloads / Electronic Circuits / AC Motor Speed Control using Triac : 8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes


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    •   Alt17th October 2011, 11:55

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    Re: speed control of single phase induction motor with TRIAC

    ya... two separating circuit. is it possible ?



    •   Alt19th October 2011, 12:57

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    Re: speed control of single phase induction motor with TRIAC

    Look starting of motor has nothing to do with Speed control, as first motor has to start and go running then it will be possible to control speed. Here is a circuit to give you bit clarification of this:
    Click image for larger version. 

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    And if you want circuit notes, visit:
    AC Motor Speed Controller

    Any further help, if needed, is welcomed.


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    Re: speed control of single phase induction motor with TRIAC

    oh... ok, is this can work on single phase ?



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