Detailed Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: A rectifier is a device that can convert Alternating current ( AC ) to Direct current ( DC ) .
A:
A rectifier is an electrical device that converts alternating current ( AC ) , which periodically reverses direction , to direct current ( DC ) , which flows in only one direction .