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2. Ceiling fan - Wikipedia

   en.wikipedia.org/wiki/Ceiling_fan

   The Emerson "Heat Fan", the first ceiling fan to use a stack motor A close-up of the dropped flywheel on a FASCO "Charleston" ceiling fan Stack-motor ceiling fans. In the late 1970s, due to rising energy costs prompted by the energy crisis , Emerson adapted their "K63" motor, commonly used in household appliances and industrial machinery, to be ...

3. Pull switch - Wikipedia

   en.wikipedia.org/wiki/Pull_switch

   The most common use of a pull switch is to operate a ceiling electric light. The ceiling fan and mechanical wall fans are also appliances often operated by pull switches. Pull switches may be either two-position (open or closed) or multi-position (allowing for different fan speeds or levels of illumination). Mounted inside a pull switch, there ...

4. Casablanca Fan Company - Wikipedia

   en.wikipedia.org/wiki/Casablanca_Fan_Company

   In 1981, Casablanca introduced the Slumber-Quiet system, which had a 3-way pull chain switch that controlled both the fan motor and an optional light kit, and a variable speed dial to adjust the fan's speed. This system was discontinued in 1985 and replaced with a variation of the system known as Slumber-Five, which had five fixed speeds ...

5. News, Politics, Sports, Mail & Latest Headlines - AOL.com

   firefox-startpage.aol.com

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

6. DIP switch - Wikipedia

   en.wikipedia.org/wiki/DIP_switch

   This type of switch is designed to be used on a printed circuit board along with other electronic components and is commonly used to customize the behavior of an electronic device for specific situations. DIP switches are an alternative to jumper blocks. Their main advantages are that they are quicker to change and there are no parts to lose.

7. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   This exhaust fan's operation is interlocked with the concentration of contaminants emitted by internal combustion engines. Mechanical, or forced, ventilation is provided by an air handler (AHU) and used to control indoor air quality. Excess humidity, odors, and contaminants can often be controlled via dilution or replacement with outside air ...