Referring to LM231 datasheet which gives general circuit for V/F converter with Vs=15V. I was wondering the basis of fixing Rin,CL,RL,Rt,Rs and Ct. Whether these are dependent on supply voltage. From the Fout equation it appears that we need only to change Rs to suit different supply voltage and other components can be retained. Tried for Vs= 5V and Vin =0 to 2V other components retained Viz. Rin, CL, RL, Rt and Ct. With Fout=10KHz, Rs works out to be 74K ohms. After connecting everything, I found no response. Checked everything in connections and it is fine.