Full wave rectifier not working

Discussion in 'Homework Help' started by 1thought.Maze1, May 25, 2014.

  1. 1thought.Maze1

    Thread Starter New Member

    Jan 22, 2012
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  2. JoeJester

    AAC Fanatic!

    Apr 26, 2005
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    You did not follow the directions you were provided. Do you know what the circled symbol is in the below diagram?
     
  3. 1thought.Maze1

    Thread Starter New Member

    Jan 22, 2012
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    Hi Joe, yes I do know what it is, but changing that resistor up and down makes no difference, I get a DC signal of 8 volts no matter what.

    Thanks for your reply, anything else you can see?
     
  4. JoeJester

    AAC Fanatic!

    Apr 26, 2005
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    Funny, when I adjusted the potentiometer to 25% (7.5 k as seen by the second opamp) the output was, as described, in your directions.
     
    Last edited: May 26, 2014
  5. JoeJester

    AAC Fanatic!

    Apr 26, 2005
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    Upon further review of your schematic, you made a serious error ...

    Can you tell me the potential between the negative supply terminal of the uA741s and ground?

    Measure it .... and then look at what potential you set for that terminal.

    See below ...
     
  6. 1thought.Maze1

    Thread Starter New Member

    Jan 22, 2012
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    you're the man Joe!, it works.. thanks a lot.

    https://drive.google.com/file/d/0B7WgOWVhXavXcWZMSHZwVEdZLVk/edit?usp=sharing
     
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