A charge transfer system includes a current-based input device for
generating an input current signal, a temporary energy storage device,
and an amplification device. A switching device couples the temporary
energy storage device to the current-based input device during a first
portion of a time period and to the amplification device during a second
portion of a time period. The input current signal charges the temporary
energy storage device, during the first portion of the time period, to
generate an input voltage signal. The amplification device receives the
input voltage signal during the second portion of the time period.