This article is designed to give you a better understanding of the amount of electrical power required to operate Switchable Privacy Glass.
Each panel of Privacy Glass comes with its own power cord, connected power transformer, and wiring to the busbars in the actual panel. A busbar is a copper strip in the laminated glass panel that makes contact with the actual PDLC film, allowing electricity to operate the crystals within that film.
The driving voltage used is your normal household 230V AC (except in the USA).
The supplied power transformer steps the voltage down to 65V AC and the resulting current, a low 1000mAmps, will drive approximately 5m² of privacy glass. For greater areas we provide more transformers. For use in Operable Walls, Stackable or Bi-fold Glass Doors we also provide a low 36V AC transformer that delivers 1500mAmps current.
The Nuts and Bolts
When switchable privacy glass is switched ‘on’ the voltage, delivered through the busbars attached to the PDLC film within the panel, serves to align the liquid crystals in that film so as to allow transparency.
When switched ‘off’, these liquid crystals scatter, or unalign, creating opacity in the film so that you cannot see through it.