Circuit to to amplify a pulse signal

[patan.gova]

Circuit to amplify a pulse signal

Hello,
I want to design a circuit that can amplify the pulse signal (it looks similar to this **broken link removed** within red coloured region) having a frequencies in the range of 0.5 to 3Hz .For example say if the pulse signal amplitude is 20mV then I want to amplify(without altering the frequencies components) this signal to 1V.
Can anyone suggest about the circuit design.

 

[Dominik Przyborowski]

If you need only to amplify this very low frequency signal, You need only an OPAMP with gain=50. For some noise reason You could add parallel to fedback resistor a big capacitor to obtain cutoff frequence around 10Hz.