hellow and thank you for reading.
i got project assiment to develop a voltmeter that can mesure voltages in the range of 10mv-10v with 5% accuracy.
i had allready built a design that works in theory, but in the lab things become real.
i will be glad for your apinion if i should drop the case or not.
in one stage of the design i need to :
1. Amplify a really small signal 10 time: (10mv-0.0995v) signal should be amplified to (100mv -0.995v).
2. i need to lower a signal by 10 : (1v-10v) signal should be lowerd to (100mv -1v).
in order to do so im using 741 op amp, the problem is the accuracy of the 741 and the accuracy of the resistor.
i have upload 3 images , each one shows a different signal the should be lowered/amplified .
another file contain the hole design in multisim.
fill free to download/ check my design .
any suggestion would be welcomed.
thank you very mutch saar.
i got project assiment to develop a voltmeter that can mesure voltages in the range of 10mv-10v with 5% accuracy.
i had allready built a design that works in theory, but in the lab things become real.
i will be glad for your apinion if i should drop the case or not.
in one stage of the design i need to :
1. Amplify a really small signal 10 time: (10mv-0.0995v) signal should be amplified to (100mv -0.995v).
2. i need to lower a signal by 10 : (1v-10v) signal should be lowerd to (100mv -1v).
in order to do so im using 741 op amp, the problem is the accuracy of the 741 and the accuracy of the resistor.
i have upload 3 images , each one shows a different signal the should be lowered/amplified .
another file contain the hole design in multisim.
fill free to download/ check my design .
any suggestion would be welcomed.
thank you very mutch saar.
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