This is done using a series of 1-way gates (diodes) in a layout called a bridge rectifier. That’s the diamond shape seen in the diagram above.

Because the bridge input and outputdo not share a common reference, standardnegative peak detectors and voltagemultiplier stages cannot be used. Thebridge ac inputs, however, do have theability to ...

The use of Op-Amps can improve the performance of a wide variety of signal processing circuits.Here is the Precision full wave rectifier ckt.