A voltage signal rectifier produces a rectified voltage signal from an
input offset voltage signal. The voltage signal rectifier includes input
offset, output, and reference nodes, two actively controlled current
regulation elements (ACCREs), and two controllers. The input offset node
is coupled to the input offset voltage signal. The rectified voltage
signal is generated onto the output node. The reference node is coupled
to a reference voltage for the input offset and rectified voltage
signals. The ACCREs are coupled to the input offset node and one of the
ACCREs is coupled to the output node. Each controller is configured to
control the one of the ACCREs so that the ACCRE coupled to the output
node allows current flow through it when the input offset voltage signal
is higher than the rectified voltage signal and the other ACCRE is
configured to allows current flow through it when the input offset
voltage signal is lower than the rectified voltage signal.