• 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
AC POWER
AC POWER

AD7452 数据手册DataSheet下载
AD7452 数据手册DataSheet下载

Active Receive Mixer LF to 500 MHz AD8342
Active Receive Mixer LF to 500 MHz AD8342

... The AD8342 is a high performance, broadband active mixer. It is well suited for demanding receive-channel applications that require wide bandwidth on all ports and very low intermodulation distortion and noise figure. The AD8342 provides a typical conversion gain of 3.7 dB with an RF frequency of 23 ...
the catalogue now (pdf 5.6Mb)
the catalogue now (pdf 5.6Mb)

... Architecture with distributed intelligence The intelligent electronic devices (IEDs) used in Premset solutions allow easy integration, based on a standard communications protocol, with a plug-and-play scanning system for easy configuration. All this adds up to a flexible system with integrated Web t ...
Aalborg Universitet CMOS Power Amplifiers for Multi-Hop Communication Systems Aniktar, Hüseyin
Aalborg Universitet CMOS Power Amplifiers for Multi-Hop Communication Systems Aniktar, Hüseyin

... and receiver parts for user equipment. These requirements specifically relate to adjacent channel leakage ratio (ACLR) and power control range characteristics. These new requirements reflect to RF parts as a need for a highly linear power amplifier with a wide power control range and sharp transmit/ ...
Noise Source Impedance Measurement in SMPS
Noise Source Impedance Measurement in SMPS

HMC665LP4 数据资料DataSheet下载
HMC665LP4 数据资料DataSheet下载

ADC音频放大器系列SSM2302 数据手册DataSheet 下载
ADC音频放大器系列SSM2302 数据手册DataSheet 下载

... The SSM2302 stereo Class-D audio amplifier features a filterless modulation scheme that greatly reduces the external components count, conserving board space and thus reducing systems cost. The SSM2302 does not require an output filter, but instead relies on the inherent inductance of the speaker co ...
PDF
PDF

... separate dc sources, diode clamped, and flying capacitors. The multilevel inverter structures are the main focus of discussion in this chapter; however, the illustrated structures can be implemented for rectifying operation as well. Although each type of multilevel converters share the advantages of ...
Power MOSFET Linearizer of a High
Power MOSFET Linearizer of a High

Lowering Power at 28 nm with Xilinx 7 Series FPGAs White Paper
Lowering Power at 28 nm with Xilinx 7 Series FPGAs White Paper

... All of these factors help customers meet their power and performance targets more easily with the HPL process than with the HP process. The same design running on a device built on the HP process will reach a system's thermal and/or power limit much sooner than if the design were running on a device ...
Analog Output Current Shunt and Voltage Instantaneous Power
Analog Output Current Shunt and Voltage Instantaneous Power

a Low Noise, 90 MHz Variable-Gain Amplifier AD603*
a Low Noise, 90 MHz Variable-Gain Amplifier AD603*

... to use a low resistance in the ladder network to achieve the very low specified noise level. The signal’s source impedance forms a voltage divider with the AD603’s 100 Ω input resistance. In some applications, the resulting attenuation may be unacceptable, requiring the use of an external buffer or ...
AN4715, i.MX 6Solo Power Consumption Measurement
AN4715, i.MX 6Solo Power Consumption Measurement

... official operating points. Most of the measurements are performed using these voltage levels, and the power data that appears in this document is according to these values. If the measurement is done at different voltage levels, the power consumption scales with the voltage change. In real applicati ...
S0410
S0410

EPM 2200
EPM 2200

... In modern digital meters, Blondell's Theorem is still applied to obtain proper metering. The difference in modern meters is that the digital meter measures each phase voltage and current and calculates the single-phase power for each phase. The meter then sums the three phase powers to a single thre ...
QS10.241, QS10.241-A1/ -C1/ -D1
QS10.241, QS10.241-A1/ -C1/ -D1

... can be found in chapter 22.1. If the power supply is loaded longer with the BonusPower® than shown in the Bonus-time diagram (see Fig. 6-2), the max. output power is automatically reduced to 240/252W. Discharge current of output capacitors is not included. This is the maximum output voltage which ca ...
514 - NDIR analyzer - Teledyne Analytical Instruments
514 - NDIR analyzer - Teledyne Analytical Instruments

user instructions - Valve and Equipment
user instructions - Valve and Equipment

... commands and messages are sent via RS-485 data signals. The gathered responses are stored in a data table in the host and are periodically updated by sequential polling of the field units. The host controls up to 250 field units. See Section 3.1.2.3, Network Cable Connection to Host System or Master ...
Model 2290 10 kV Power Supply
Model 2290 10 kV Power Supply

Practical Papers, Articles and Application Notes
Practical Papers, Articles and Application Notes

... but is written in US English rather than Oxford English, which for example deprecates the use of “z’’ in such words as “standardization” where the “z” is replaced by an “s”. [4] The third document is NIST TN 1297, Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results. ...
download 1
download 1

... no liability for damages resulting from any errors or omissions in this manual, or from the use of the information contained herein. Flash Technology reserves the right to revise this manual without obligation to notify any person or organization of the revision. In no event will Flash Technology be ...
Voltage Binning Under Process Variation
Voltage Binning Under Process Variation

Design and Analysis of a Dual Loop CDR using Maneatis Delay Cell
Design and Analysis of a Dual Loop CDR using Maneatis Delay Cell

... evaluating the impact of power supply noise on CDR system has been described in [10]. Very few studies on the mitigation of power supply noise for CDRs have been reported in the literature. The present work addresses this particular aspect of CDR circuits, specifically in the context of dual loop de ...
AD8318 1 MHz to 8 GHz, 70 dB Logarithmic Detector/Controller
AD8318 1 MHz to 8 GHz, 70 dB Logarithmic Detector/Controller

< 1 ... 20 21 22 23 24 25 26 27 28 ... 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