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2. Model 500 telephone - Wikipedia

   en.wikipedia.org/wiki/Model_500_telephone

   The Western Electric model 500 telephone series was the standard domestic desk telephone set issued by the Bell System in North America from 1950 through the 1984 Bell System divestiture. The successor to the model 302 telephone , the model 500's modular construction compared to previous types simplified manufacture and repair and facilitated a ...

3. SPX Corporation - Wikipedia

   en.wikipedia.org/wiki/SPX_Corporation

   SPX Corporation is an American manufacturing company, headquartered in Charlotte, North Carolina. [2] [3] [4] The company operates within four markets: heating, ventilation, and air conditioning (), detection and measurement, power transmission and generation, and engineered solutions.

4. Electric heating - Wikipedia

   en.wikipedia.org/wiki/Electric_heating

   An electric heater is an electrical device that converts an electric current into heat. [1] The heating element inside every electric heater is an electrical resistor , and works on the principle of Joule heating : an electric current passing through a resistor will convert that electrical energy into heat energy.

5. Emerson Electric - Wikipedia

   en.wikipedia.org/wiki/Emerson_Electric

   Emerson Electric office in Markham, Ontario. Emerson Electric Co. is an American multinational corporation headquartered in St. Louis, Missouri. [2] [3] [4] The Fortune 500 company delivers a range of engineering services, manufactures industrial automation equipment, climate control systems, and precision measurement instruments, and provides software engineering solutions [buzzword] for ...

6. AOL Video - Serving the best video content from AOL and ...

   www.aol.com/video

   The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.

7. Heating element - Wikipedia

   en.wikipedia.org/wiki/Heating_element

   This characteristic of PTC heaters makes them self-regulating, as their power stabilizes at fixed temperatures. On the other hand, NTC-type heaters generally require a thermostat or a thermocouple in order to control the heater runaway. These heaters are used in applications which require a quick ramp-up of heater temperature to a predetermined ...