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  2. Light-emitting diode - Wikipedia

    en.wikipedia.org/wiki/Light-emitting_diode

    A small amount of green light, provided by another LED, could correct the problem. [38] Some products are RGBWW, i.e. RGBW with tunable white. [39] A final class of white LED with mixed light is dim-to-warm. These are ordinary 2700K white LED bulbs with a small red LED that turns on when the bulb is dimmed.

  3. Sharp Corporation - Wikipedia

    en.wikipedia.org/wiki/Sharp_Corporation

    Sharp portable TV Sharp MD-MS701H. In 1953, Hayakawa Electric started producing the first Japan-made TV sets (the "Sharp TV3-14T"). In 1964, the company developed the world's first transistor calculator (the Sharp CS-10A), which was priced at JP¥535,000 (US$1,400). It took Sharp several years to develop the product as they had no experience in ...

  4. International Comfort Products - Wikipedia

    en.wikipedia.org/wiki/International_Comfort_Products

    ICP is a Carrier subsidiary. ICP makes oil and gas furnaces, heat pumps, and central air-conditioning systems for residential and commercial customers. [1] It manufacturers, markets, and sells residential heating and cooling systems under the Arcoaire, Comfortmaker, Day & Night, Heil, KeepRite, Lincoln, and Tempstar brands; its commercial units, with up to 25 tons of cooling capacity, are sold ...

  5. Variable refrigerant flow - Wikipedia

    en.wikipedia.org/wiki/Variable_refrigerant_flow

    Variable refrigerant flow (VRF), also known as variable refrigerant volume (VRV), is an HVAC technology invented by Daikin Industries, Ltd. in 1982. [1] Similar to ductless mini-split systems, VRFs use refrigerant as the primary cooling and heating medium, and are usually less complex than conventional chiller-based systems.

  6. Fan coil unit - Wikipedia

    en.wikipedia.org/wiki/Fan_coil_unit

    These motors are sometimes called DC motors, sometimes EC motors and occasionally DC/EC motors. DC stands for direct current and EC stands for electronically commutated.. DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required.

  7. Sharp PC-7000 - Wikipedia

    en.wikipedia.org/wiki/Sharp_PC-7000

    The PC-7000 was Sharp's second entry into the IBM PC-compatible portable computer market, their first being the PC-5000. The PC-7000 eschewed the PC-5000's clamshell design , battery operation, and lighter weight—19 pounds (8.6 kg) for the PC-7000 versus the PC-5000's 11 pounds (5.0 kg).

  8. Sharp Aquos - Wikipedia

    en.wikipedia.org/wiki/Sharp_Aquos

    Sharp's SmartLink technology was incorporated into the Aquos LC-15L1U-S. [2] From 2015 to 2018, Sharp-branded TVs sold in the United States were made by Chinese manufacturer Hisense. In 2019, Sharp regained its licensing and brand, buying back its assets from Hisense. Sharp-manufactured Sharp TVs have been back on the market since late 2019. [3]

  9. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    This is a list of vacuum tubes or thermionic valves, and low-pressure gas-filled tubes, or discharge tubes.Before the advent of semiconductor devices, thousands of tube types were used in consumer electronics.

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