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Octago
Joined: 14 Mar 2008
Posts: 30
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 08 May 2008 11:52 how to implement the addition/subtraction of two voltages |
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| in the integrated circuit, which circuit can be used to implement the basic ADDITION/SUBTRACTION function (Vout=V1+V2) of two voltages?
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sakthivel.vp
Joined: 08 May 2008
Posts: 2
Helped: 1
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| 08 May 2008 12:43 Re: how to implement the addition/subtraction of two voltage |
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Hi,
Try using operation amplifiers to add and subtract voltages
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AdvaRes
Joined: 14 Feb 2008
Posts: 450
Helped: 20
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| 08 May 2008 12:54 Re: how to implement the addition/subtraction of two voltage |
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| Octago wrote: |
| in the integrated circuit, which circuit can be used to implement the basic ADDITION/SUBTRACTION function (Vout=V1+V2) of two voltages? |
Hi,
Please check this Link
http://elearning.algonquincollege.com/coursemat/saurioc/ELE-2-CENG/ELE2-CE-NOTES/BASICOPA.pdf
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Octago
Joined: 14 Mar 2008
Posts: 30
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| 09 May 2008 16:49 Re: how to implement the addition/subtraction of two voltage |
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then I need to design an operational amplifier with negative feedback
is it difficult to design such a circuit?
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pakitos
Joined: 14 Nov 2005
Posts: 318
Helped: 38
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| 09 May 2008 19:53 how to implement the addition/subtraction of two voltages |
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you need the adder and differance amplifier
the heart of the adder is a inverting configuration amplifier.
the diff between the two is that for the adderboth inputs are at the inverting ( inverting amp) or non inverting (non inverting amp). So that the signal is beeing added.
in the second case one signal is connected to the inverting input of the opamp and the second non inverting in in this way the two signals will be subtraced since one has + sign other -.
see both circuits here:
http://www.wam.umd.edu/~toh/ElectroSim/Adder.html
http://www.tpub.com/content/neets/14180/css/14180_125.htm
hope i have helped you
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Octago
Joined: 14 Mar 2008
Posts: 30
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| 12 May 2008 18:52 Re: how to implement the addition/subtraction of two voltage |
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The subtraction circuit I saw are all with an operational amplifier symbol
Are there any detailed transistor schematic? Because now I want to implement it in CMOS integrated circuit
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Hughes
Joined: 10 Jun 2003
Posts: 709
Helped: 84
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| 13 May 2008 15:42 how to implement the addition/subtraction of two voltages |
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| In discrete-time applications, you may also use switched-capacitor circuits.
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