Circuit design for making the pulse signals of different amplitude into square pulses

[patan.gova]

Hello,
I am getting output signals from filtering stage as here **broken link removed** .
The sequence of pulse signals being obtained are of different amplitudes but I want to make them into square pulses of equal amplitude say below 3V as I will be using this to read with micro controller in the next stage.
I found that the schmitt will do this job.Can I use schmitt trigger for my purpose.
If so, can anyone provide some information for the circuit designing that best suits my requirement.
Thanks.

 

[iimagine]

First, amplify your signal so that the lowest amplitude is above 3V, then use a schmitt trigger to handle the rest

 

[crutschow]

If the minimum signal level is above about 50mV then you can use a comparator, such as an LM319 or LM393 (with a small amount of positive feedback to give Schmitt trigger action). A typical comparator circuit is shown on this page.

Edit: For 3V output, connect the output resistor to a 3V supply (the comparator supply must still be at least 5V).