Jump to content
Electronics-Lab.com Community

need a simple project


Recommended Posts

You could use the LM741 operational amplifier to demonstate some simple function of math such as addition, integration and differentiation.

The simplest one to design is probably the summing amplifier. Set all resistors equal and the output is the negative sum of the all inputs. To get rid of the negative sign use another LM741 as an invertor with a gain of 1.

Summing op amp configuration

Inverting op amp
To achieve a gain of 1, set Rin = Rf.

The output is taken from the inverting op amp. This is actually how they used to do addition and in different configurations; calculus functions. Using volatge to represent numbers.

Hey you said simple  ;D

Alittle more challenging one (using the same LM741) is to design a "force calculator" - the force required to accelerate or decelerate an object. The LM741 must be configured as a differentiator.

Link to comment
Share on other sites

  • 2 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...