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wiki:cmp:pow:poe:start
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| Предыдущая версия справа и слеваПредыдущая версия | |||
| wiki:cmp:pow:poe:start [2023/12/19 22:07] – Roman Abakumov | wiki:cmp:pow:poe:start [2024/07/22 11:02] (текущий) – [Theory] Roman Abakumov | ||
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| Строка 23: | Строка 23: | ||
| | 4 pair POE | IEEE802.3bt Type4 | up to 100W | | | 4 pair POE | IEEE802.3bt Type4 | up to 100W | | ||
| - | In Power over Ethernet systems, the power sourcing equipment (PSE) senses the Ethernet connection to detect if the powered device (PD) is plugged into the cable termination by applying a small voltage (2.7 V to 10 V) on the Ethernet cable and measures the equivalent resistance in at least two consecutive steps. During this phase, the PD must present a resistance between 23.75 kW and 26.25 kΩ. | + | In Power over Ethernet systems, the power sourcing equipment (PSE) senses the Ethernet connection to detect if the powered device (PD) is plugged into the cable termination by applying a small voltage (2.7 V to 10 V) on the Ethernet cable and measures the equivalent resistance in at least two consecutive steps. During this phase, the PD must present a resistance between 23.75 kΩ and 26.25 kΩ. |
| Designers can set the current by changing the value of the external resistor according to the following table: | Designers can set the current by changing the value of the external resistor according to the following table: | ||
wiki/cmp/pow/poe/start.1703023654.txt.gz · Последнее изменение: 2023/12/19 22:07 — Roman Abakumov
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