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  2. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    PV4200 – Full-wave rectifier, 4 V, 2 A (=200×10 mA) filament R2018 = B2038 = REN1821 = A2118 – Triode, 180 mA heater S406 = A442 = RES094 – Directly heated tetrode with a screen grid, 4 V, 60 mA filament

  3. Bosch Rexroth - Wikipedia

    en.wikipedia.org/wiki/Bosch_Rexroth

    Bosch Rexroth AG is an engineering firm based in Lohr am Main in Germany. It is the result of a merger on 1 May 2001, between Mannesmann Rexroth AG and the Automation Technology Business Unit of Robert Bosch GmbH , and is a wholly owned subsidiary of Robert Bosch GmbH. [ 3 ]

  4. Refrigerator - Wikipedia

    en.wikipedia.org/wiki/Refrigerator

    Food in a refrigerator with its door open. A refrigerator, commonly shortened to fridge, is a commercial and home appliance consisting of a thermally insulated compartment and a heat pump (mechanical, electronic or chemical) that transfers heat from its inside to its external environment so that its inside is cooled to a temperature below the room temperature. [1]

  5. Washer-dryer - Wikipedia

    en.wikipedia.org/wiki/Washer-dryer

    In the past, combo washer dryer capacity was generally smaller than that of full-size washers, and it also took much longer to process a load of laundry. Currently, available washer-dryers are able to wash 11 kilograms (24 lb) and dry 7 kilograms (15 lb) (nominal rating); they are fully comparable to standard washing machines and tumble dryers.

  6. Washing machine - Wikipedia

    en.wikipedia.org/wiki/Washing_machine

    Since the 2010s, some machines have had touchscreen displays, full-color or color displays, or touch-sensitive control panels. [ 80 ] [ 81 ] In 1994, Staber Industries released the System 2000 washing machine, which is the only top-loading, horizontal-axis washer to be manufactured in the United States.

  7. The Hoover Company - Wikipedia

    en.wikipedia.org/wiki/The_Hoover_Company

    The Hoover Company is a home appliance company founded in Ohio, United States, in 1908.It also established a major base in the United Kingdom, where it dominated the electric vacuum cleaner industry during most of the 20th century, to the point where the Hoover brand name became synonymous with vacuum cleaners and vacuuming in the United Kingdom and Ireland.

  8. ULT freezer - Wikipedia

    en.wikipedia.org/wiki/ULT_freezer

    An ultra low temperature (ULT) freezer is a refrigerator that stores contents at −80 to −86 °C (−112 to −123 °F). [1] An ultra low temperature freezer is commonly referred to as a "minus 80 freezer" or a "negative 80 freezer", referring to the most common temperature standard. [2] ULT freezers come in upright and chest freezer formats.

  9. Control system - Wikipedia

    en.wikipedia.org/wiki/Control_system

    The centrifugal governor is an early proportional control mechanism.. A control system manages, commands, directs, or regulates the behavior of other devices or systems using control loops.