Product category:
AC/DC Power Supplies
News Release from: Phihong Europe | Subject: Gigabit single port injector
Edited by the Electronicstalk Editorial
Team on 03 October 2005
PoE injector works with gigabit Ethernet
A new single port power injector for power-over-Ethernet applications is designed for use with Gigabit systems.
Phihong has developed a single port power injector for power-over-Ethernet (PoE) applications for use with Gigabit systems Unlike other power injectors on the market, the PSA20U is not limited to working only on 10BaseT or 100BaseT systems, but is compatible with systems up to 1000Mbit/s
This article was originally published on Electronicstalk on 12 Mar 2004 at 8.00am (UK)
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Other available PoE injectors connect the power onto the spare conductors, disconnecting the connections from the incoming cable and applying the power to those conductors.
Although this works for 10BaseT and 100BaseT systems, the conductors in the 1000BaseT system are not spare, but are used for data.
"Phihong's PSA20U meets this challenge by connecting the power onto the data lines", said Keith Hopwood, Vice President of Marketing for Phihong USA.
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"The single port injector does this successfully without corrupting the signal or causing any attenuation loss through the injector".
According to Hopwood, network switch manufacturers have been doing this for a while, but they have the advantage of data PHYs and special PoE transformers that act like repeater amplifiers to resolve any attenuation or insertion loss.
Phihong has developed a way to do this without adding significant insertion loss.
"The benefit is our products can be purchased and inserted anywhere - 10BaseT, 100BaseT and now 1000BaseT", said Hopwood.
Another advantage of the 20U is that the output is designed to give 19.6W while complying with IEEE802.3af detection and fault protection requirements.
Development of the gigabit single-port injector was driven by the high datarate requirements of broadband wireless 802.11n access points and high-quality IP cameras with streaming video, as well as remote-mounted devices where no power outlets are readily available.
These applications also require high power capabilities, easily met by the gigabit one port's 19.6W output capability.
PoE technology is an innovative solution to problems involving AC power and the placement of power outlets.
PoE allows both power and data to be carried over an Ethernet cable.
Whereas installing local power outlets in a warehouse, store or office can cost hundreds of dollars and cause delays due to scheduling for an electrician, moving or installing an Ethernet cable doesn't carry any of these limitations.
AC input voltage range for the single port injector is 90 to 264V AC with input frequency from 47 to 63Hz.
Maximum output load current is 350mA and output voltage is 56V DC.
The device offers total output power of 19.6W with fully compliant detection, connection, disconnection and fault protection per the IEEE802.3af standard.
The adapter features three LEDs that indicate power, connection and fault diagnostic code to ease installation and setup.
Safety approvals include cUL, TUV and CE double insulated class 2.
Approvals for EMI are EN55022 Class B, FCC part 15 Class B.
Phihong is an expert at international safety agency approvals and can offer almost any international safety or EMC compliance standard.
Typical pricing for Phihong's gigabit single port injector is $18.00 each in OEM quantities.
Parts are available immediately.
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