• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
CMS Powerpoint
CMS Powerpoint

... The Conveyor Management System's intelligent controllers monitor and supervise the entire operation. The Safeline Circuit™ provides an extra level of safety. The Safeline Circuit in every CMS controller ensures that every safety device is operating at all times. ...
- IEEE Mentor
- IEEE Mentor

... Attention is called to the possibility that implementation of this recommended practice may require use of subject matter covered by patent rights. By publication of this recommended practice, no position is taken with respect to the existence or validity of any patent rights in connection therewith ...
Power Distribution Units Remote EPO Panels
Power Distribution Units Remote EPO Panels

Application guide No. 3193
Application guide No. 3193

... Causes and relevance of transients and surges Damaging effects of transients and surges UL SPD Types and NEC® locations ...
MoCA HOME NETWORK INSTALLATION AND MAINTENANCE
MoCA HOME NETWORK INSTALLATION AND MAINTENANCE

... Technicians need tools to overcome learning curve and efficiently identify a problem’s root cause and resolve issues ...
Installation/User Manual
Installation/User Manual

... ✔✔ Before installing or using the APS Microinverter, please read all instructions and cautionary markings in the technical documents and on the APS Microinverter system and the PV-array. ✔✔ Be aware that the body of the APS Microinverter is the heat sink and can reach high temperatures. To reduce ri ...
Cisco 1700 Series Modular Access Routers
Cisco 1700 Series Modular Access Routers

... upgrade of an entire platform. The wide range of available WIC and VIC solutions gives customers a choice when implementing WAN and voice technologies. It allows customers to start out with a solution that meets current needs and easily expand as business demands grow. WAN technologies supported inc ...
FCTC_Zamer_iscsi
FCTC_Zamer_iscsi

... iFCP is a gateway-to-gateway protocol for implementing a fibre channel fabric over a TCP/IP transport Traffic between fibre channel devices is routed and switched by TCP/IP network The iFCP layer maps Fibre Channel frames to a predetermined TCP connection for transport FC messaging and routing servi ...
using the acom2 adapter with motorola microcontrollers in
using the acom2 adapter with motorola microcontrollers in

... transistor on or off. Another requirement for microcontroller operation is called the clock. The clock is the timing signal which causes the internal computer circuitry to sequence. The internal clock frequency of the microcontroller is established by an external component called a crystal. The crys ...
L70 Hardware Design
L70 Hardware Design

Powerware BladeUPS for Data Centers, 12kW single system to
Powerware BladeUPS for Data Centers, 12kW single system to

... critical load shall be continuously supplied regulated and protected AC power. The system shall power the load while regulating both voltage and frequency in compliance with the UPS output specifications (Section 2.2C). The system shall derive power from the commercial AC source if the input source ...
Chapter 3: Wireless Access Point Web Management
Chapter 3: Wireless Access Point Web Management

... electrical wiring. In a home or small office building, use TPL-310AP adapters to link multiple locations without the need to run long Ethernet cables. Combined with a single broadband DSL/Cable Internet connection, every room with electrical power outlets can provide easy access to your high-speed I ...
here - IET Labs
here - IET Labs

... described and details of their uses are given. Among the accessories are the GR Type 1560-P42 Preamplifier and the 156(}P62 Power Supply. which is required with the Preamplifier when it i s used with sound-measuring instruments that do not incl ude a source of power to operate the Preamplifier. Othe ...
DEWA Standards for Distributed Renewable Resources Generators
DEWA Standards for Distributed Renewable Resources Generators

... Apparent Power - Is the product of voltage (in volts) and current (in amperes). It is usually expressed in kilovoltamperes (kVA) or megavolt-amperes (MVA) and consists of a real component (Active Power) and an imaginary component (Reactive Power). In case of inverters, the rated apparent power corre ...
Low Voltage Surge Protection Products
Low Voltage Surge Protection Products

... If the site requires filtering at the point of entry, select an PPFI with the appropriate current rating for the load, then select the model appropriate for the protection category. For DC solar panel arrays with Grid Interactive inverters it is recommended that Cat C / Class II, DC type SPD’s are u ...
PS-A.3 Terms and definitions - Power Sources Manufacturers
PS-A.3 Terms and definitions - Power Sources Manufacturers

... output short circuit current the current resulting from a direct short circuit across the output with the other outputs, if any, loaded to minimum or no load conditions. ...
DS500 RemotaSilo™ Upgrade
DS500 RemotaSilo™ Upgrade

... The two asynchronous serial ports located on the RemotaSilo circuit board (internal and external) are automatically configured to match the settings of the asynchronous serial ports located on the host computer and the RAID controller, respectively. These serial port settings consist of the followin ...
TURCK IM Series Interface Modules Application Guide
TURCK IM Series Interface Modules Application Guide

... Dry contact (mechanical switches) however, require the use of a resistor network in order for the additional functions to operate properly. The incorporation of a ready made resistor network module (WM1 see Figure 1) is recommended. This section highlights the devices and provides a simple approach ...
OPERATOR’S MANUAL BHK-MG FULL RACK SERIES POWER SUPPLY MODELS
OPERATOR’S MANUAL BHK-MG FULL RACK SERIES POWER SUPPLY MODELS

Installation/User Manual APS YC500-A Photovoltaic Grid-connected Inverter APS America
Installation/User Manual APS YC500-A Photovoltaic Grid-connected Inverter APS America

Cisco PIX 515E Security Appliance
Cisco PIX 515E Security Appliance

Emerson Network Power® MPH2™ Rack PDU
Emerson Network Power® MPH2™ Rack PDU

... of sufficient magnitude to constitute a risk of electric shock to persons. ...
POWER ENGINEERING GUIDE - Edition 7.0
POWER ENGINEERING GUIDE - Edition 7.0

... Whether in infrastructure systems, industry or households, transformers always play a key role in the reliable transmission and distribution of power. The construction, rated power, voltage level and scope of the application are all key factors that determine the transformer’s design. Siemens provid ...
WLAN
WLAN

... Wireless DoS attacks can be the result of:  Improperly configured devices.  Configuration errors can disable the WLAN.  A malicious user intentionally interfering with the wireless communication. Disable the wireless network where no legitimate device can access the medium. ...
Avaya Technology Forum Breakout
Avaya Technology Forum Breakout

< 1 ... 14 15 16 17 18 19 20 21 22 ... 576 >

Power over Ethernet



Power over Ethernet or PoE describes any of several standardized or ad-hoc systems which pass electrical power along with data on Ethernet cabling. This allows a single cable to provide both data connection and electrical power to devices such as wireless access points or IP cameras. Unlike standards such as Universal Serial Bus which also power devices over the data cables, PoE allows long cable lengths. Power may be carried on the same conductors as the data, or it may be carried on dedicated conductors in the same cable.There are several common techniques for transmitting power over Ethernet cabling. Two of them have been standardized by IEEE 802.3. Since only two of the four pairs are needed for 10BASE-T or 100BASE-TX, power may be transmitted on the unused conductors of a cable. In the IEEE standards, this is referred to as Alternative B. Power may also be transmitted on the data conductors by applying a common-mode voltage to each pair. Because twisted-pair Ethernet uses differential signalling, this does not interfere with data transmission. The common mode voltage is easily extracted using the center tap of the standard Ethernet pulse transformer. This is similar to the phantom power technique commonly used for powering audio microphones. In the IEEE standards, this is referred to as Alternative A.In addition to standardizing existing practice for spare-pair and common-mode data pair power transmission, the IEEE PoE standards provide for signalling between the power sourcing equipment (PSE) and powered device (PD). This signaling allows the presence of a conformant device to be detected by the power source, and allows the device and source to negotiate the amount of power required or available. Up to a 25.5 watts is available for a device.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report