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D/A converter

Discussion in 'General Electronics Discussion' started by DtuStudent, Jan 8, 2012.

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  1. DtuStudent


    Jan 7, 2012
    Hi everyone. Since this is the first post I am writing here I will make a rather short introduction of myself. My name is Carsten Lorenzen, I am 22 years old and originating from Copenhagen Denmark. I am currently studying at DTU, where I study electronic engineering.

    At the moment I have just recovered from a nice round of illness in the winter. What makes it even more wonderfull is that it was the whole first week of my 3 week project, which is the end mark of my first semester in my education.

    Therefore I am pretty much in deep **** and have been reading as much as I can, but leading nowhere I must say.

    My project is where I have to build an electricly controlled stress-oven, and here I have to use a D/A converter. I have understood the whole concept for the converter and been making calculations. I want to make a 2 bit D/A converter, that recognizes the 4 different stages of different settings. 60°, 80°,100° and 120°. Since I am making 4 settings in the interval of 0V-5V, I have to expand my D/A converter to 3bits, since 60° can't be 0V output. So I have made it like this: [​IMG]
    Where I replaced the invert OP amp, with a non invert OP amp and where V3 and V2 are the 2 input bits, that represents my choice of how hot the oven should be.

    My problem now is: How do I get this all done in practic? I Simply can't see myself doing this with my available components, can you guys gimme examples, that shows how it's done? I would greatly appreciate it.
    Thank you in advance.
  2. BobK


    Jan 5, 2010
    What is the problem with building this exactly as shown?

  3. DtuStudent


    Jan 7, 2012
    I have no problem anymore, I just had an epiphany this morning. So I did it right away in practice.
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