• 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
Power Analyzer Your Partner For Network Analyzing Your Partner
Power Analyzer Your Partner For Network Analyzing Your Partner

The control of VSC-HVDC and its use for large industrial power
The control of VSC-HVDC and its use for large industrial power

Efficient Precise Computation with Noisy Components: Extrapolating From an Electronic Cochlea to the Brain
Efficient Precise Computation with Noisy Components: Extrapolating From an Electronic Cochlea to the Brain

... like energy, time, and space for general analog and digital systems. We rederive a wellknown result for particular systems, namely, that analog systems are more ecient than digital systems at low signal-to-noise (SN ) ratios and vice versa. The basic reason for this behavior is that physical primit ...
INTERNATIONAL STANDARD IEC 60044-2
INTERNATIONAL STANDARD IEC 60044-2

... this end and in addition to other activities, the IEC publishes International Standards. Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental ...
KX-TG4012LAT KX-TG4013LAT KX-TGA403LAT
KX-TG4012LAT KX-TG4013LAT KX-TGA403LAT

Aalborg Universitet electricity network -  Report on Control Strategies
Aalborg Universitet electricity network - Report on Control Strategies

... The present document summarizes the work that has been done in Work Package 5 (WP5) where the focus is on modelling and control of the Uniflex-PM system. The models used in the WP5 are described in detail. Since the grid synchronization and monitoring techniques play an important role in the control ...
Voltage Regulator TAPCON® 250
Voltage Regulator TAPCON® 250

... The installation and commissioning instructions along with the accompanying connection diagrams also apply in addition to this Operating Instructions. All documents are part of the scope of delivery. In addition, generally applicable statutory and other binding regulations in European and national l ...
F81 User Guide - Funktion-One
F81 User Guide - Funktion-One

... Use only Funktion One recommended loudspeaker connectors wired so that the cable  conductors are fully shrouded  Use the appropriate cable conductor gauge. See section 8  Ensure that your cables are in good condition and free from damage  Ensure that there are no loose conductor strands to short out ...
Application Note OptiMOS CoolMOS The Optimal Solutions Suitable
Application Note OptiMOS CoolMOS The Optimal Solutions Suitable

... range during the load range with acceptable cost. Therefore cascaded topology is promoted, on the one hand to increase the efficiency during the whole input and load range, on the other hand to simplify the control strategy. In this application note two cascaded topology solutions- Buck and Boost fo ...
Noise Parameters
Noise Parameters

... termination to the DUT. When the diode is biased in the on state, the avalanche breakdown creates considerable electrical noise, over and above that provided by a room-temperature termination. This amount of extra noise is characterized as an “excess noise ratio” or ENR. Typical ENR values are 5 dB ...
Catalog IC 10 · 2014 Chapter 5
Catalog IC 10 · 2014 Chapter 5

Ballast OptiOns - Columbia Lighting
Ballast OptiOns - Columbia Lighting

S225-10-4C
S225-10-4C

... elevating structure (optional). Regulators are normally provided with either pole mounting brackets or a station plafform according to the rating. This information is available in Table 3-1, page 3-1, by noting the S(Substation) suffix to the kVA. A Cooper Power System's elevating structure (Figure ...
Low-Power High-Speed Current Mode Logic Using Tunnel
Low-Power High-Speed Current Mode Logic Using Tunnel

Unified Power Quality Conditioner for Grid Integration
Unified Power Quality Conditioner for Grid Integration

MX15 Series User Manual
MX15 Series User Manual

... MOVING THE POWER SOURCE When moving the power source, observe the following: 1. Remove all AC power to unit. 2. Do not attempt to lift by hand. Unlock the casters and push the unit using two people to prevent injury or use forklift equipment with a qualified operator. ...
Survey of Noise Sources in Bulk CMOS
Survey of Noise Sources in Bulk CMOS

sensorless digital control of grid connected three phase
sensorless digital control of grid connected three phase

Design of Ultra-Low-Power Analog-to-Digital Converters Dai Zhang
Design of Ultra-Low-Power Analog-to-Digital Converters Dai Zhang

... An analog-to-digital converter (ADC) converts real-world continuous signals to discrete digital numbers. As the interface between the analog world and the digital domain, ADCs are ubiquitous in many applications. The applications that require ultra-low-power consumption in the ADC are frequently fou ...
DIGITALLY CONTROLLED ENERGY HARVESTING POWER MANAGEMENT SYSTEM
DIGITALLY CONTROLLED ENERGY HARVESTING POWER MANAGEMENT SYSTEM

... operating modes of the controllers are reviewed. A two-stage prototype digitally controlled average current mode control Boost converter and average current mode controlled Buck converter were designed and experimental waveforms were captured to test and validate the control theories used in the PEM ...
Voltage Regulator-Down (VRD) 11.0 Processor Power Delivery
Voltage Regulator-Down (VRD) 11.0 Processor Power Delivery

Programming manual
Programming manual

8.0 ELECTRIC POWER
8.0 ELECTRIC POWER

... The NRC staff also reviewed supplemental information included in VCS SUP 8.1-2, related to regulatory guidelines and industry standards and found it to be consistent with Section 8.1 of NUREG-0800 with the exception of the information discussed below. VCS COL FSAR Table 8.1-201, 1b indicated that RG ...
Cree, CMPA2735075F 75W, 2.7-3.5GHz GaN HEMT MMIC (Cree
Cree, CMPA2735075F 75W, 2.7-3.5GHz GaN HEMT MMIC (Cree

MX15 Series AC and DC Power Source User Manual
MX15 Series AC and DC Power Source User Manual

... Always ensure that facility AC input power is de-energized prior to connecting or disconnecting any cable. In normal operation, the operator does not have access to hazardous voltages within the chassis. However, depending on the user’s application configuration, HIGH VOLTAGES HAZARDOUS TO HUMAN SAF ...
< 1 2 3 4 5 6 7 8 9 10 ... 316 >

Decibel

The decibel (dB) is a logarithmic unit that expresses the ratio of two values of a physical quantity, often power or intensity. One of these quantities is often a reference value and in this case the decibel expresses the absolute level of the physical quantity. The number of decibels is ten times the logarithm to base 10 of the ratio of two power quantities, or of the ratio of the squares of two field amplitude quantities. One decibel is one tenth of one bel, named in honor of Alexander Graham Bell; however, the bel is seldom used.The definition of the decibel is based on the measurement of power in telephony of the early 20th century in the Bell System in the United States. Today, the unit is used for a wide variety of measurements in science and engineering, most prominently in acoustics, electronics, and control theory. In electronics, the gains of amplifiers, attenuation of signals, and signal-to-noise ratios are often expressed in decibels. The decibel confers a number of advantages, such as the ability to conveniently represent very large or small numbers, and the ability to carry out multiplication of ratios by simple addition and subtraction. By contrast, use of the decibel complicates operations of addition and subtraction.A change in power by a factor of 10 is a 10 dB change. At the half power point an audio circuit or an antenna exhibits an attenuation of 3dB. A change in voltage by a factor of 10 results in a change in power by a factor of 100, which is a 20 dB change. A change in voltage ratio by a factor of two approximately corresponds to a 6 dB change.The decibel symbol is often qualified with a suffix that indicates the reference quantity that has been used or some other property of the quantity being measured. For example, dBm indicates a reference power of one milliwatt, while dBu is referenced to approximately 0.775 volts RMS.In the International System of Quantities, the decibel is defined as a unit of measurement for quantities of type level or level difference, which are defined as the logarithm of the ratio of power- or field-type quantities.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report