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Экологический статус

Статьи

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  PD Controller ICs with Integrated Flyback or Forward Controllers Meet Demands of 25.5W PoE+ &mdash LT Journal
  PDF, 761 Кб, Файл опубликован: 1 сен 2009
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  L DESIGN FEATURES PD Controller ICs with Integrated
  Flyback or Forward Controllers Meet
  by Ryan Huff
  Demands of 25.5W PoE+
  Introduction
  The IEEE 802.3af Power over Ethernet (PoE) standard allows a powered
  device (PD), such as an internet
  protocol (IP) telephone, to draw up to
  12.95W from an Ethernet cable. When
  the 802.3af standard was drafted,
  12.95W appeared sufficient to cover
  the immediately imaginable range of
  PD products (primarily IP phones).
  Of course, application developers
  are always far more innovative than
  standards committees anticipate, so
  new power-hungry applications for
  PoE immediately started to appear,
  such as dual-radio IEEE 802.11a/g
  and 802.11n wireless access points,
  security cameras with pan/tilt/zoom
  motors, and color LCD IP video
  phones. 12.95W was suddenly not …

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Классификация производителя

• Monitor, Control and Protection > Power-over-Ethernet (PoE) Interface Controllers > PoE Powered Device (PD)

Варианты написания:

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