how to implement the addition/subtraction of two voltages

Status
Not open for further replies.
O

Octago

Member level 1
Joined
Mar 14, 2008
Messages
36
Helped
0
Reputation
0
Reaction score
1
Trophy points
1,286
Activity points
1,557
in the integrated circuit, which circuit can be used to implement the basic ADDITION/SUBTRACTION function (Vout=V1+V2) of two voltages?
 

Re: how to implement the addition/subtraction of two voltage

Hi,

Try using operation amplifiers to add and subtract voltages
 

    O

    Octago

    Points: 2
    Helpful Answer Positive Rating

    O

    Octago

    Points: 2
    Helpful Answer Positive Rating
Re: how to implement the addition/subtraction of two voltage

then I need to design an operational amplifier with negative feedback
is it difficult to design such a circuit?
 

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
 

    O

    Octago

    Points: 2
    Helpful Answer Positive Rating
Re: how to implement the addition/subtraction of two voltage

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
 

In discrete-time applications, you may also use switched-capacitor circuits.
 

    O

    Octago

    Points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…