- #1
draktheas
Hi, I am new to electronics and haven't been successful in my search, nor my efforts to create a solution to the problem.
I need a circuit or IC that downconverts voltage but keeps the same frequency and signal pattern as the input over a very wide range of frequencies. No matter what the input voltage is (will always be less than 24v), I need the output voltage to be a maximum of 5v and minimum of 0v. For example, say I had an two input signals with a triangle wave running between 0 and 14v and a triangle wave running between 0 and 24v, the output in both cases would be a triangle wave with the same frequency as input but scaled to 0 to 5v. It would be nice to be able to tell what the original input voltage was for reference as well, but I can create a digital ciruit to do this if need be. :) Also, I am working with a very high input signal impedence, 1Mohm.
I tried using a PNP transistor with a voltage divider on Vin and then ran the divided voltage to the base, without much success. I have looked into Op-Amps for this task, but can't seem to quite wrap my head around how to do it correctly. I have also scoured for an IC that does this for me, but can't seem to find anything.
I am sure it is just my lack of knowledge and experience, please tell me that there is such a device or circuit out there.
Thanks,
Drak
I need a circuit or IC that downconverts voltage but keeps the same frequency and signal pattern as the input over a very wide range of frequencies. No matter what the input voltage is (will always be less than 24v), I need the output voltage to be a maximum of 5v and minimum of 0v. For example, say I had an two input signals with a triangle wave running between 0 and 14v and a triangle wave running between 0 and 24v, the output in both cases would be a triangle wave with the same frequency as input but scaled to 0 to 5v. It would be nice to be able to tell what the original input voltage was for reference as well, but I can create a digital ciruit to do this if need be. :) Also, I am working with a very high input signal impedence, 1Mohm.
I tried using a PNP transistor with a voltage divider on Vin and then ran the divided voltage to the base, without much success. I have looked into Op-Amps for this task, but can't seem to quite wrap my head around how to do it correctly. I have also scoured for an IC that does this for me, but can't seem to find anything.
I am sure it is just my lack of knowledge and experience, please tell me that there is such a device or circuit out there.
Thanks,
Drak
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