Ionizer Posted on 1st December 20155th October 2020 by ThePD (The Project Definition) An Ionizer is an electrical device that uses high voltage to ionise air and produce negative ions into the air. Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window) Related Posted in Engineering and tagged device, electrical, engineering, technology. ThePD (The Project Definition) ThePD has been developing the Preferred Project Definitions based on the actual project execution and operation experiences and knowledge with the Project Language, and sharing with you daily basis.