It is in reality a minute rectifier of alternating current, and analogous to those which have since been made on a large scale.
"Edison, His Life and Inventions"
Frank Lewis Dyer and Thomas Commerford Martin
For this reason a crystal detector is sometimes called a rectifier, which it really is.
"The Radio Amateur's Hand Book"
A. Frederick Collins
The Vacuum Tube rectifier.
"The Radio Amateur's Hand Book"
A. Frederick Collins