• 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
Optimal Location and Control of Flexible Three Phase Shunt FACTS
Optimal Location and Control of Flexible Three Phase Shunt FACTS

Principles of Electronic Communication Systems
Principles of Electronic Communication Systems

atwinc1500 - Atmel Corporation
atwinc1500 - Atmel Corporation

... ATWINC1500A has an internally-generated 32kHz clock to provide timing information for various sleep functions. Alternatively, ATWINC1500A allows for an external 32kHz clock to be used for this purpose, which is provided through Pin 24 (RTC_CLK). Software selects whether the internal clock or externa ...
48V Telecom Current/Voltage/Power Sense with
48V Telecom Current/Voltage/Power Sense with

HS_i: Power supply systems
HS_i: Power supply systems

How RF transformers work and how they are measured
How RF transformers work and how they are measured

Measurement Theory Principles
Measurement Theory Principles

... Examples: Substitution method. ...
Aalborg Universitet Hierarchical Control for Voltage Harmonics Compensation in Multi-Area Microgrids
Aalborg Universitet Hierarchical Control for Voltage Harmonics Compensation in Multi-Area Microgrids

... and DGs terminals with the help of APFs. The coordination between DGs and APFs is based on voltage THD at DGs terminals and inverters nominal power. According to [5], in case of multiple APFs, utilizing APFs is simultaneous and compensation sharing between them is based on their rated power. However ...
A High Gain Input-Parallel Output
A High Gain Input-Parallel Output

LT4180 - Virtual Remote Sense Controller
LT4180 - Virtual Remote Sense Controller

P82478
P82478

... Current" or "Tated Peak Current" (whichever is higher) of an individual strobe (across the expected voltage range of the strobe), then multiply these values by the total number of strobes; be sure to add the currents for any other appliances, including audible signaling appliances, powered by the sa ...
SA-1500 Series Pure Sine Wave Inverter User`s Manual
SA-1500 Series Pure Sine Wave Inverter User`s Manual

STABILITY ANALYSIS AND OPTIMAL CONTROL DESIGN FOR AC-DC POWER SYSTEM WITH by
STABILITY ANALYSIS AND OPTIMAL CONTROL DESIGN FOR AC-DC POWER SYSTEM WITH by

... Power electronics are involved in many applications. The number of applications has been growing significantly during the last decades. Among those applications, there is a typical type of load: the constant power load (CPL). This type of load has always been an important issue both for the industry ...
WEEK 5 sizing 1(2)
WEEK 5 sizing 1(2)

... a maximum voltage drop of 5% between the solar array and the inverter. If the inverter is located far from the point of connection to the grid then the AC voltage drop is also need to be included in this 5% 5.4.5 Inverter efficiency - There are losses in the inverter due to transformer losses, power ...
ISSN: 0975-766X CODEN - International Journal of Pharmacy and
ISSN: 0975-766X CODEN - International Journal of Pharmacy and

... number of capacitors. Early descriptions of this topology were limited to three-levels [3] where two capacitors are connected across the dc bus resulting in one additional level. The additional level was the neutral point of the dc bus, so the terminology neutral point clamped inverter was introduce ...
HV Concepts HVCEB E-Beam 4kW to 6kW with single HV On
HV Concepts HVCEB E-Beam 4kW to 6kW with single HV On

... Fax: 845-278-8187 ...
measuring rms values of voltage and current
measuring rms values of voltage and current

... interval over which a measurement is made. If, on the other hand, the voltage (current) function grows without bound over time, the average value is dependent on the measurement interval and will not necessarily be constant, i.e. no average value exists. Fortunately in the practical electrical world ...
An interconnected power system typically consists of many different
An interconnected power system typically consists of many different

T34123128
T34123128

... protecting the voltage on “bus- 6” will be studied.Singleline diagram is shown in fig. 7. The DVR parameters and the control system specifications are provided in Appendices A and B. At t=205 ms, the fault is applied at t= 285 ms, and the breaker works and separates the line between buses “5” and “9 ...
Amplifiers and Modulators
Amplifiers and Modulators

... Loss***** Noise Figure <7dB Test Points Attenuation -20dB Mains Powering 230V ~ 50Hz 11W Operating Temperature -20°C - +50°C Range ...
P O W E R DIGITAL SWITCHBOARD METERS
P O W E R DIGITAL SWITCHBOARD METERS

... digital switchboard meter with transducer output which can be 2492 with cover removed configured in the field by an end-user, or when installed in new electrical equipment by an OEM. It eliminates requirements for a large inventory of dedicated instruments, and provides flexibility when new panel de ...
Oz DIY-WB User`s manual
Oz DIY-WB User`s manual

... downstream of the existing sensor, and certainly before the catalytic converter. The sensor should not be mounted with its wires pointing downward as this can allow water, that may condense on the inside of the sensor’s body during warmup, to drip onto and crack the ceramic heater element inside the ...
ADJ - PP-DMX20 user manual
ADJ - PP-DMX20 user manual

... a. Control the output to all four outlets with one DMX channel. b. Group outlet channels one and two and group outlets channels three and four. The first group will be controlled by one DMX channel and the second group will be controlled by another DMX channel. This gives the pack a DMX value of two ...
2016 China International Conference on Electricity Distribution
2016 China International Conference on Electricity Distribution

LT5575 - 800MHz to 2.7GHz High Linearity Direct Conversion Quadrature Demodulator.
LT5575 - 800MHz to 2.7GHz High Linearity Direct Conversion Quadrature Demodulator.

... into I/Q baseband signals using quadrature LO signals which are internally generated from an external LO source by precision 90° phase-shifters. The demodulated I/Q signals are single-pole low-pass filtered on-chip with a –3dB bandwidth of 490MHz. The differential outputs of the I-channel and Q-chann ...
< 1 ... 66 67 68 69 70 71 72 73 74 ... 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