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  1. #1
    Join Date
    Mar 2011
    Location
    Valparaiso, Indiana
    Posts
    3

    New Forum Member

    Would like to say Hi to forum members. Do a lot of internet surfing and ran across this forum thought I would join I am a Senior Technical Training Insturctor by Technical I mean basic electronics, basic industrial electricity, ac motors (three phase & single phase) dc motors, switchgear etc. I keep myself busy training and traveling.

  2. #2
    Join Date
    Dec 2002
    Location
    SouthEast NC ICW & Piedmont Foothills
    Posts
    7,635
    welcome, got any info on 2 phase?
    It`s better to be silent and thought the fool; than speak and remove all doubt.

  3. #3
    Join Date
    Nov 2010
    Location
    Andover Kansas
    Posts
    2,115
    Welcome!
    .


    The statement below is my signature and just my overall feeling towards our industry and does not necessarily pertain to you nor this thread.


    There really isn't a legitimate excuse for not doing the job correctly!

  4. #4
    Join Date
    Mar 2011
    Location
    Valparaiso, Indiana
    Posts
    3

    2 phase

    2 phase is used in selsy systems for positioning control or as a feedback in ac/dc drives for speed or position control. The selsyn has two windings one is R1 & R2 the other winding is labled S1 - S2 - S3. There can be two selsyns in the position control system a transmitter and receiver. The S windings of the transmitter connect to the S windings of the receiver. The R winding of the transmitter and reciver connect across the line and both have to be connected to the same source of ac. As the S winding rotates a phase shift occurs between the S winding and the R winding. Since the S winding of the transmitter is connected to the receiver the voltage in the receiver is at the same phase angle as the transmitter and the receivers S winding rotates to match the position of the transmitter. That is how a selsyn system functions. In a servo system a brushless motor can be used with a permanent magnet rotor and a rotating magnetic field for the stator again it can be used for position control in an ac or dc drive system.

  5. #5
    Join Date
    Dec 2002
    Location
    SouthEast NC ICW & Piedmont Foothills
    Posts
    7,635
    oh, you're better than a lot that hear 2 phase and think smoke is being blown up their a__

    i only have one book that references 2 phase

    you going for pro membership?
    It`s better to be silent and thought the fool; than speak and remove all doubt.

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