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2. Phoenix Contact - Wikipedia

   en.wikipedia.org/wiki/Phoenix_Contact

   Phoenix Contact, headquartered in Blomberg, Ostwestfalen-Lippe, Germany, is a manufacturer of industrial automation, interconnection, and interfaces.The company develops terminal blocks, relays, connectors, signal conditioners, power supplies, controllers & PLCs, I/O systems, Industrial Ethernet, controller system cabling, PCB terminal blocks & connectors, and surge suppression. [1]

3. Power over Ethernet - Wikipedia

   en.wikipedia.org/wiki/Power_over_Ethernet

   Earlier versions of passive PoE 24 VDC power sources shipped with 802.11a, 802.11g and 802.11n-based radios are commonly 100 Mbit/s only. Passive DC-to-DC injectors also exist which convert a 9 V to 36 V DC, or 36 V to 72 V DC power source to a stabilized 24 V 1 A, 48 V 0.5 A, or up to 48 V 2.0 A PoE feed with '+' on pins 4 & 5 and '−' on ...

4. Walker railmotor - Wikipedia

   en.wikipedia.org/wiki/Walker_railmotor

   The lighting system was powered by the then-standard Victorian Railways' 24vDC supply, which utilised a belt-driven axle generator to charge batteries and 20-watt globes. Trailer cars were not fitted with their own power supply, instead drawing power via jumper cables from adjacent units; the exceptions being 54 and 56MT, which are thought to ...

5. Dry contact - Wikipedia

   en.wikipedia.org/wiki/Dry_contact

   Dry contact may mean any of the following in electronics: . No current: A dry contact is the synonym of volt free — it is not "wetted" by a voltage source.Dry contact can refer to a secondary set of contacts of a relay circuit which does not make or break the primary current being controlled by the relay.

6. DC connector - Wikipedia

   en.wikipedia.org/wiki/DC_connector

   Two different airline in-seat power supply system (ISPSS) standards for DC power have been used in the past. American Airlines in the past used an automobile auxiliary power outlet. Most other airlines that provide DC power use the smaller EmPower system, which has a 4-pin Hypertronics' D-series connector. It can supply 15 volts maximum 5 amperes.

7. Switched-mode power supply - Wikipedia

   en.wikipedia.org/wiki/Switched-mode_power_supply

   On the other hand, if the power supply has a voltage selector switch, based on the Delon circuit, for 115/230 V (computer ATX power supplies typically are in this category), the selector switch would have to be put in the 230 V position, and the required voltage would be 325 VDC (230 × √2). The diodes in this type of power supply will handle ...