• Study Resource
  • Explore Categories
    • 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
ver6_1_known_issues
ver6_1_known_issues

... reference for the V_fixture voltage and the package model equivalent network. It can also serve as a reference for C_comp, unless C_comp is optionally split into component attached to the other reference voltages. to: Figure 16 illustrates a general configuration from which a [Rising Waveform] or [F ...
FMCA Article: “Keep your Motorhome`s Electrical System Safe...”
FMCA Article: “Keep your Motorhome`s Electrical System Safe...”

Voltage and Current harmonics caused by Power Factor
Voltage and Current harmonics caused by Power Factor

Electronically Coupled Distributed Generation Modeling and Control
Electronically Coupled Distributed Generation Modeling and Control

... maximum power point tracking and unity power factor dispatching. Modeling for photovoltaic array (the distributed generator) and three-phase grid-connected inverter produce the optimum control parameters. The inverter’s controller uses inner and outer control loops to control parameters. The inner c ...
Achieving and improving Level and Attenuation
Achieving and improving Level and Attenuation

pdf
pdf

... high frequency noise (from 5 lp/cm to the Nyquist frequency) unchanged. This trend is also quantitatively spotted out by the evaluation of the mean frequency of the spectra, which decreases for higher iDose levels (Table 1). For each level, the mAs equivalent values are reported in Table 1. In the c ...
AN96-07 - Semtech
AN96-07 - Semtech

operating instructions
operating instructions

... On a new unit the biasing will be factory set for the particular set of KT88’s supplied with the amplifier. Although this should not need to be adjusted unless a new set of output valves is fitted, on all amplifiers as valves age their bias requirements may change. Please note: Two methods of checki ...
X-Ray Generators
X-Ray Generators

...  Power = Voltage X Current  Transformer primary power = secondary power  transformer neither creates nor consumes power ...
IRIS POWER Volume 1, Issue 1 February 2006
IRIS POWER Volume 1, Issue 1 February 2006

... may not be detected in the winding, since PD can occur in all coils in an off-line test. (In contrast, in an on-line test, only the coils close to the stator terminals operate at high voltage, and thus will experience high PD.) The new standard does not suggest pass or fail criteria - which makes it ...
An Improved Topology for Symmetric, Asymmetric and
An Improved Topology for Symmetric, Asymmetric and

SERIES 200 POWER CONDITIONERS
SERIES 200 POWER CONDITIONERS

... coil. Hence output voltage is virtually constant over a large input voltage range. The C coil causes the inverse of any harmonic appearing at the output to be magnetically coupled into the B coil, so limiting the output distortion (with a linear load) to 3% or less, regardless of the input distortio ...
SERIES 200 POWER CONDITIONERS
SERIES 200 POWER CONDITIONERS

... coil. Hence output voltage is virtually constant over a large input voltage range. The C coil causes the inverse of any harmonic appearing at the output to be magnetically coupled into the B coil, so limiting the output distortion (with a linear load) to 3% or less, regardless of the input distortio ...
SL10.305 - PULS Power Supply
SL10.305 - PULS Power Supply

edc-module_ia-dc_generator
edc-module_ia-dc_generator

Versa-Pac as Forward Converter
Versa-Pac as Forward Converter

... maximum duty cycle to 50% and also reduces the number of possible configurations, as only 5 windings will be available. Figure 2 shows a simple way of resetting the transformer using an resistor-capacitor-diode (RCD) network which allows all 6 windings to be used when configuring the transformer. ...
MAX2202 RMS Power Detector General Description Features
MAX2202 RMS Power Detector General Description Features

... and series capacitor between the directional coupler’s output and detector RF input. As shown in the Typical Operating Characteristics, an S11 of less than -9dB is possible when a terminating resistor of 50Ω and series capacitor of 220pF are used at the input. S11 of the MAX2202 RFIN port without in ...
MS1040 product datasheet
MS1040 product datasheet

... The HP L1730 17-inch TFT monitor is marine type-approved by all of the major international marine Classification Societies when it is installed in conjunction with our Mariner Kit MS1040. The MS1040 Mariner Kit is designed to fit into your console or 19” rack and affords protection against the effec ...
Experimental submit in 0.13um CMOS.
Experimental submit in 0.13um CMOS.

... high quality A/D and D/A converters. The proposed circuit fits well into the low supplyvoltage range of the current and future deep sub-micron technologies. We have carried out pre-design characterizations of the DTMOST structures taken from an experimental submit. Design and specifications of the b ...
211DS Shaking Incubator User Manual
211DS Shaking Incubator User Manual

... between 5 and 40C, at no greater than 80% Relative Humidity ( at 25C ) and with a supply voltage that does not vary by more than 10%. ...
Mohamed Moenes Mohamed Salama _PAPER_03 ESTIMATING
Mohamed Moenes Mohamed Salama _PAPER_03 ESTIMATING

... These limits are, generally, related to the problems of thermal loading and transient stability. Modern control and protection equipment have raised the transfer limits in stability limited systems. However, as the operating conditions for large power systems have evolved, a new type of problem has ...
AMIS60, AMIS120 v120704
AMIS60, AMIS120 v120704

Improved Interline Unified Power-Quality Conditioner with
Improved Interline Unified Power-Quality Conditioner with

Implementation of D-STACTOM for Improvement of Power
Implementation of D-STACTOM for Improvement of Power

PRO 3500 - Monster
PRO 3500 - Monster

< 1 ... 165 166 167 168 169 170 171 172 173 ... 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 © 2026
  • DMCA
  • Privacy
  • Terms
  • Report