I am dealing with a signal that produces an AC voltage ranging from 0-5 volts. The analog device that I am using requires a DC analog input of zero to 5 volts DC. I have produced "semi" successful results using a bridge rectifier design with one problem. When the AC signal voltage is below 1 volt or so, the DC voltage drops to zero due to the voltage drop across the diodes. I need a simple way to get the full range of the DC voltage to match the AC signal. FYI; The AC signal is being generated from a current transformer which produces the 0 - 5 Volt AC voltage. I appreciate any help.