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  2. Power over Ethernet - Wikipedia

    en.wikipedia.org/wiki/Power_over_Ethernet

    In a passive PoE system, the injector does not communicate with the powered device to negotiate its voltage or wattage requirements but merely supplies power at all times. Common 100 Mbit/s passive applications use the pinout of 802.3af mode B (see § Pinouts ) – with DC positive on pins 4 and 5 and DC negative on 7 and 8 and data on 1–2 ...

  3. Phantom power - Wikipedia

    en.wikipedia.org/wiki/Phantom_Power

    Phantom powering was first used for landline copper wire-based plain old telephone service since the introduction of the rotary dial telephone in 1919. One such application in the telephone system was to provide a DC signalling path around transformer-connected amplifiers such as analogue line transmission systems.

  4. File:Ejector or Injector.svg - Wikipedia

    en.wikipedia.org/wiki/File:Ejector_or_Injector.svg

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  5. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    Microsoft compressed file in Quantum format, used prior to Windows XP. File can be decompressed using Extract.exe or Expand.exe distributed with earlier versions of Windows. After compression, the last character of the original filename extension is replaced with an underscore, e.g. ‘Setup.exe’ becomes ‘Setup.ex_’. 46 4C 49 46: FLIF: 0 flif

  6. List of Volkswagen Group diesel engines - Wikipedia

    en.wikipedia.org/wiki/List_of_Volkswagen_Group...

    This is a marine-modified version of the 3.0 V6 24v TDI CR automobile engine. This common rail V6 turbodiesel was developed by Audi , and first installed in the Audi D3 A8 in 2004. Subsequently, made available for all longitudinal engined Audis, along with the same engine orientation in Volkswagen Passenger Cars 'premium' models and Volkswagen ...

  7. File:Boiler Feed Injector Diagram.svg - Wikipedia

    en.wikipedia.org/wiki/File:Boiler_Feed_Injector...

    A sectional diagram of a typical steam boiler feed injector, simplified to show the major parts common to such injectors, showing typical proportions, and using colour and shading to hint at temperature, pressure, and velocity variations in the fluid flows. The SVG was hand coded using a text editor.

  8. DI unit - Wikipedia

    en.wikipedia.org/wiki/DI_unit

    This makes passive DIs less expensive, but it also means that they cannot amplify signal power. The turns ratio on a passive DI is typically chosen to convert a nominal 50 kΩ signal source (such as the magnetic pickup of an electric guitar or electric bass) to the 100–200 Ω expected by the mic input of an audio mixer. Typical turns ratios ...

  9. Injection pump - Wikipedia

    en.wikipedia.org/wiki/Injection_pump

    Injection pump for a 12-cylinder diesel engine. An injection pump is the device that pumps fuel into the cylinders of a diesel engine.Traditionally, the injection pump was driven indirectly from the crankshaft by gears, chains or a toothed belt (often the timing belt) that also drives the camshaft.