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IndustryArena Forum > CNC Electronics > CNC Machine Related Electronics > Circuit for converting 2-channel quadrature to single channel

Thread: Circuit for converting 2-channel quadrature to single channel

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  1. 01-23-2017, 04:21 AM #1
    mackeym
    mackeym is offline Registered
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    Circuit for converting 2-channel quadrature to single channel

    I need to convert a 2 channel (A and B phase) quadrature signal to single channel. The single channel should have double the frequency of the dual channel signals. Can anyone provide me with a circuit that does this?
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  2. 01-23-2017, 05:06 AM #2
    Al_The_Man's Avatar
    Al_The_Man
    Al_The_Man is offline Community Moderator
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    Re: Circuit for converting 2-channel quadrature to single channel

    Done all the time to increase the resolution to x2 or x4 by either using the the AB leading edges (x2) or both leading edges and trailing edges, (x4).
    Are you interested in doing it with TTL logic?
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.
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  3. 01-23-2017, 05:09 AM #3
    mackeym
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    Re: Circuit for converting 2-channel quadrature to single channel

    Yes. TTL logic
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  4. 01-23-2017, 05:25 AM #4
    CitizenOfDreams
    CitizenOfDreams is offline Member
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    Re: Circuit for converting 2-channel quadrature to single channel

    A XOR B, which is SN7486. Or you can make your own XNOR gate with an SN7400:

    Attachment 347566
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