• 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
Purchasing your Aerovox Capacitor cells from ARCO today…
Purchasing your Aerovox Capacitor cells from ARCO today…

... power supplies. The distorted current waveform generates a distorted source voltage due to the system (electrical power system) impedance. A distorted waveform can be analyzed by decomposing it into a fundamental component (line frequency) and higher frequency components of varying amplitude. The ef ...
Power supply CP-D 12/2.1 Primary switch mode power supply Data sheet Features
Power supply CP-D 12/2.1 Primary switch mode power supply Data sheet Features

... Connect the input terminals L and N. The installation must be executed acc. to EN 60950, provide a suitable disconnecting device (e. g. line protection switch) in the supply line. The input side is protected by an internal input fuse. Rate the lines for the maximum output current or provide a separa ...
CMOS Bandgap References (2)
CMOS Bandgap References (2)

... CMOS voltage reference, however, can be achieved by making use of the concept of voltage reference. These CMOS circuits rely on using well transistors. These devices are vertical bipolar transistors that use wells as their bases and the substrate as their collectors ...
increase of the grid integration of decentralized power plants by the
increase of the grid integration of decentralized power plants by the

Distributed generation and voltage changes in a distribution network
Distributed generation and voltage changes in a distribution network

LH0041 - Texas Instruments
LH0041 - Texas Instruments

the EdgeLink-T3-E/O data sheet - PDF Version
the EdgeLink-T3-E/O data sheet - PDF Version

... EdgeLink-T3-E/O® Fiber Transport Terminal provides long-haul transport of standard DS3 signals over single mode fiber optic cable. EdgeLink-T3-E/O is ideal for a variety of high-speed applications including extending DS3 point-of-presence (POP) from service providers’ demarcation points or linking D ...
AC Circuits & Phasors
AC Circuits & Phasors

a voltage-controlled dstatcom for power-quality
a voltage-controlled dstatcom for power-quality

... maintained, while regulating voltage at the load terminal, during load change. The state-space model of DSTATCOM is incorporated with the deadbeat predictive controller for fast load voltage regulation during voltage disturbances. With these features, this scheme allows DSTATCOM to tackle power-qual ...
3011800000610
3011800000610

... 1.2V. Fundamental output power can be observed in Figure 4. ...
Installation
Installation

... If you require technical support, contact dbx Customer Service. Be prepared to accurately describe the problem. Know the serial number of your unit - this is printed on a sticker attached to the top panel. If you have not already taken the time to fill out your warranty registration card and send it ...


... disturbances, such as voltage sags, spikes, harmonics, etc. In order to improve the efficiency and to minimize costs, modern industrial equipment typically uses a large amount of electronic components, such as programmable logic controllers (PLC), adjustable speed drives (ASD), power supplies in com ...
Intro to Electronic Equipment
Intro to Electronic Equipment

... We will now use the multimeter to measure the current through the circuit. Since measuring the current through a circuit is much different than measuring the voltage across two points in a circuit, we will have to adjust how we put the multimeter into the circuit. The circuit path must be broken and ...
PRE-73 MKII - goldenageproject.se
PRE-73 MKII - goldenageproject.se

datasheet
datasheet

... The Trimble NetR8 has four gigabytes of onboard memory and the receiver’s 50 Hz operation speed is the fastest in the industry. Large capacity onboard data storage allows post-processed results for base stations to be computed after the survey completion, improving the accuracy of the survey. Using ...
Transmitter
Transmitter

IQIB100N60A3
IQIB100N60A3

VRP-3000-5000, 230V, 50Hz
VRP-3000-5000, 230V, 50Hz

Slide 1
Slide 1

... • A skewed gate favor one transition over the other(s). ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,

... rotor current [3]. In stator flux oriented control, both stator and rotor quantities are transformed to a special reference frame that rotates at an angular frequency identical to the stator flux linkage space to deal with machine dynamic behavior in case rotor and the stator quantities were referre ...
Amplifier IC Generates a Negative Voltage
Amplifier IC Generates a Negative Voltage

31226.pdf
31226.pdf

A Nested Optimization Problem for Analysis of Market Bidding
A Nested Optimization Problem for Analysis of Market Bidding

... push the flux into saturation for part of the ac cycle This can cause large harmonics; in the positive sequence (e.g., power flow and transient stability) these harmonics can be represented by increased reactive power losses on the transformer. ...
report
report

... With the increasing usage of portable devices, there are severe restrictions being placed on the size, weight and power of batteries. Circuits consuming more power require batteries to be charged more frequently. It has therefore become important not only to optimize circuits for delay and area, but ...
2016 China International Conference on Electricity Distribution
2016 China International Conference on Electricity Distribution

< 1 ... 185 186 187 188 189 190 191 192 193 ... 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