Expenential decay linearizer

[Roff]

Linearized ramp is to be used as a test fixture in embedded A/D test. That is why it need to be converted from exponential decay voltage (capacitor discharge to be exact). So, the circuit its just a converter, converting the exponential to linear ramp, so that it can be use in A/D testing.

I thought you were working on some sort of school assignment, where the goal was to linearize an exponential ramp. Now you say it is just for A/D testing!
So why can't you use a current source charging (or discharging) a capacitor, which generates a linear ramp you can use for A/D testing? I have done this. it works.

 

[Papabravo]

Possibly becuase a fixation on a particular solution inhibits clear thinking and thoughtful consideration. But what do I know I'm just a graduate engineer sloping into retirement.

 

[ericgibbs]

Possibly becuase a fixation on a particular solution inhibits clear thinking and thoughtful consideration. But what do I know I'm just a graduate engineer sloping into retirement.

hi,
As you say, its a case of 'thinking inside the box'.