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  2. CyberArk - Wikipedia

    en.wikipedia.org/wiki/CyberArk

    CyberArk was founded in 1999 in Israel [5] [6] by Udi Mokady [7] and Alon N. Cohen. In June 2014, CyberArk filed for an initial public offering (IPO) with the Securities and Exchange Commission, listing 2013 revenues of $66.2 million. [8] CyberArk became a public company the same year, trading on the NASDAQ as CYBR. [9]

  3. Uninterruptible power supply - Wikipedia

    en.wikipedia.org/wiki/Uninterruptible_power_supply

    The offline/standby UPS offers only the most basic features, providing surge protection and battery backup. The protected equipment is normally connected directly to incoming utility power. When the incoming voltage falls below or rises above a predetermined level the UPS turns on its internal DC-AC inverter circuitry, which is powered from an ...

  4. Airbus E-Fan - Wikipedia

    en.wikipedia.org/wiki/Airbus_E-Fan

    The E-Fan 4.0 appears identical to the E-Fan apart from a fuselage stretch. To increase flight duration the planned E-Fan 4.0 would have had a hybrid-electric system that will have a small engine to charge the battery (like a range extender), which would have increased its duration from 2 hours to 3.5 hours. The first flight of the E-Fan 2.0 ...

  5. Computer cooling - Wikipedia

    en.wikipedia.org/wiki/Computer_cooling

    Fans are used when natural convection is insufficient to remove heat. Fans may be fitted to the computer case or attached to CPUs, GPUs, chipsets, power supply units (PSUs), hard drives, or as cards plugged into an expansion slot. Common fan sizes include 40, 60, 80, 92, 120, and 140 mm. 200, 230, 250 and 300 mm fans are sometimes used in high ...

  6. Battery room - Wikipedia

    en.wikipedia.org/wiki/Battery_room

    Telephone system central offices contain large battery systems to provide power for customer telephones, telephone switches, and related apparatus. [2] Terrestrial microwave links, cellular telephone sites, fibre optic apparatus and satellite communications facilities also have standby battery systems, which may be large enough to occupy a separate room in the building.

  7. Computer fan control - Wikipedia

    en.wikipedia.org/wiki/Computer_fan_control

    A fan controller with LEDs indicating fan status and potentiometers and switches to control fan speeds. Another method, popular with PC hardware enthusiasts, is the manual fan speed controller. They can be mounted in an expansion slot or a 5.25" or 3.5" drive bay or come built into a computer's case. Using switches or knobs, attached fans can ...

  8. Turbofan - Wikipedia

    en.wikipedia.org/wiki/Turbofan

    Blade tip clearances are more difficult to maintain at the exit of the high-pressure compressor where blades are 0.5 in (13 mm) high or less; backbone bending further affects clearance control as the core is proportionately longer and thinner and the fan to low-pressure turbine driveshaft space is constrained within the core.

  9. Variable pitch fan - Wikipedia

    en.wikipedia.org/wiki/Variable_pitch_fan

    A variable pitch fan is similar in concept to that of a variable-pitch propeller and involves progressively reducing the pitch (or blade angle) of the fan on a turbofan as the engine is throttled. Although variable pitch fans are used in some industrial applications, the focus of this article is on their use in turbofan engines .