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2. Power over Ethernet - Wikipedia

   en.wikipedia.org/wiki/Power_over_Ethernet

   The original PoE standard, IEEE 802.3af-2003, [1] now known as Type 1, provides up to 15.4 W of DC power (minimum 44 V DC and 350 mA) [2] [3] on each port. [4] Only 12.95 W is guaranteed to be available at the powered device as some power dissipates in the cable.

3. EIAJ connector - Wikipedia

   en.wikipedia.org/wiki/EIAJ_connector

   This is a unique-looking barrel connector, apparently intended for providing a DC output jack (most DC jacks are used for power input).. Possibly available in multiple voltage ranges, the one for voltage classification 2 (3.15 to 6.3 V) has an outside diameter of 4.75 mm and a protruding pin of 2.5 mm diameter.

4. Coaxial power connector - Wikipedia

   en.wikipedia.org/wiki/Coaxial_power_connector

   9.0 12VDC @ 0.5A Marushin Electric MP-138NK ... Used in Acer Aspire V5 adapter and some Hikvision 48V NVRs 5.50 2.10 M CUI Inc. P5 CUI Inc. PP3–002A Kobiconn 3217 ...

5. Ubiquiti - Wikipedia

   en.wikipedia.org/wiki/Ubiquiti

   Ubiquiti Inc. (formerly Ubiquiti Networks, Inc.) [3] is an American technology company founded in San Jose, California, in 2003. [ 1 ] [ 4 ] Now based in New York City , [ 5 ] Ubiquiti manufactures and sells wireless data communication and wired products for enterprises and homes under multiple brand names.

6. Power dividers and directional couplers - Wikipedia

   en.wikipedia.org/wiki/Power_dividers_and...

   Directional couplers are frequently symmetrical so there also exists port 4, the isolated port. A portion of the power applied to port 2 will be coupled to port 4. However, the device is not normally used in this mode and port 4 is usually terminated with a matched load (typically 50 ohms). This termination can be internal to the device and ...

7. Phantom power - Wikipedia

   en.wikipedia.org/wiki/Phantom_Power

   It is suitable only for powering microphones specifically designed for use with this type of power supply. Damage may result if these microphones are connected to true (48 V) phantom power through a 3.5 mm to XLR adapter that connects the XLR shield to the 3.5 mm sleeve. [17] Plug-in-power is covered by Japanese standard CP-1203A:2007. [18]