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How good a "sine" wave to drive a selsyn/synchro?

Discussion in 'Electronic Design' started by jtaylor, Sep 29, 2005.

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  1. Bob Stephens

    Bob Stephens Guest

    It wouldn't be square for long driving into a nearly pure inductive load :(

    Again, I didn't see your original question so I may be talking through my
    hat, but one technique I have used in the past is to run the AC reference
    voltage into a four quadrant multiplying DAC and modulate it with a cosine
    wave lookup table in stored in ROM. This way with one stored wave you can
    generate the phase shifted 'legs' by simply indexing into the table.

    One other thing. Most synchros will work just fine in an 'S2 grounded'
    configuration where you ground one of the legs -S2- and only need to drive
    the other two.

  2. OK, should we all vote on whether it's AMPLITUDES or PHASES? >:->


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    echo ' ------'
    #echo `fortune all`
    OFORTUNES=`ls /usr/share/games/fortunes/*-o`
    echo \"`fortune $OFORTUNES`\"
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