Please design circuit as per requirements given below

[scm123]

Hi,
I am working on Level Indicator projects.I want circuit to match one requirement.

About the project.

We are measuring Level of liquid by the amount of output current.
The o/p current varies linearly with load resistance.The load resistance varies with level of liquid. Load resistance is inversely proportional to Level of liquid.
So in short-

Level increases->load resistance decreases->o/p current increases

So i want to design circuit to meet the above situation.

email-shailesh.mirajkar@gmail.com


So specifications are as given below

Input voltage-any voltage between 5 to 20 volts DC (Constant)
Output current-varying linearly between 4 milliamps(DC) to 20 milliamps(DC) with load resistance.
Load resistance-varies between 1k to 2k linearly

 

[Nigel Goodwin]

Sorry, but this site isn't a homework service, and your request looks definately like it's a homework question. I suggest you try doing some work on your course, rather than trying to cheat!.

 

[TrevorP]

Yeah sorry man you gotta just do the work on your own. Show us what you have so far and we could recommend changes. But we aren't doing it all.