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The first commercially available screen heating system was developed in 1947 by F.R. Hannon & Sons (now Hanco International (), and Thomas W. Hannon obtained a patent for his electrically heated screen construction and method Archived 2017-02-11 at the Wayback Machine Archived 2017-02-11 at the Wayback Machine Archived 2017-02-11 at the Wayback ...
A CRT works by electrically heating a tungsten coil [8] which in turn heats a cathode in the rear of the CRT, causing it to emit electrons which are modulated and focused by electrodes. The electrons are steered by deflection coils or plates, and an anode accelerates them towards the phosphor -coated screen, which generates light when hit by ...
A touch screen thermostat An electronic thermostat in a retail store. A thermostat is a regulating device component which senses the temperature of a physical system and performs actions so that the system's temperature is maintained near a desired setpoint. Thermostats are used in any device or system that heats or cools to a setpoint temperature.
A Zenith 1200 CRT Projector based home theater. Visible extending from the ceiling are three lenses, one each for red, green and blue Black and white CRT projector. A CRT projector is a video projector that uses a small, high-brightness cathode-ray tube (CRT) as the image generating element.
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