UV Amplifier

Discussion in 'General Electronics Chat' started by wxf, Jan 13, 2014.

  1. wxf

    Thread Starter New Member

    Jan 13, 2014
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    0
    Hi,

    I'm building a motor stage for university project. It took me a while to realize that what I needed is a what's called UV amplifier.

    I Googled on this but were only able to find some very limited info:
    ideas/concepts:
    http://www.electromate.com/db_suppo...oidal vs. Sinusoidal Brushless Amplifiers.pdf
    product:
    http://www.motioncontrol.com/node/7125

    Basically I have a motion control card with a pair of A/B phase output. It is already with commutation but I will need to lead them towards the amplifier to output 3 phase current to drive a BLDC motor.

    I'd like to build it myself, but it looks like even if I want to buy there isn't much available on the market. It could be that I have not looked hard enough, but the one listed above is a PWM output stage. I'm looking for a linear stage.

    So in summary, I'd like someone to get me started on this project. The requirement is 1) an amplifier that takes a pair of phase input with commutation; 2) output to drive a 3-phase BLDC motor; 3) the amplifier has to be analog, not PWM.

    Thanks in advance,

    Jay
     
  2. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,782
    1,103
    The thread title is very misleading. What has ultra-violet got to do with motor control?
    Can you post a link to the control card you have?
     
  3. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,750
    759
    I am confused !! :confused:
     
  4. crutschow

    Expert

    Mar 14, 2008
    13,000
    3,229
    According to the white paper, amplifiers accepting two sinusoidal reference signals are called "non-commutating" or U-V servo amps. Apparently U-V refers to the two out-of-phase signals.

    Here's the website for the driver amp manufacturer you posted. Perhaps one of their amps will work for you.
     
  5. wxf

    Thread Starter New Member

    Jan 13, 2014
    8
    0
    Yes, it could be misleading and UV is probably more commonly understood as ultra violet. I realized that when I was googling with UV amplifier. But hope this is clearer once the white paper was read.

    This also sort of explained why this subject is less discussed. :)

    Thank you!
     
  6. wxf

    Thread Starter New Member

    Jan 13, 2014
    8
    0
    I've started a new post. Thanks everyone for replying.
     
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