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Overvoltages - protection
Overvoltages - protection

Aalborg Universitet Embedded EZ-Source Inverters Blaabjerg, Frede; Loh, Poh Chiang; Gao, F.
Aalborg Universitet Embedded EZ-Source Inverters Blaabjerg, Frede; Loh, Poh Chiang; Gao, F.

BSNL JTO Exam Paper 2005
BSNL JTO Exam Paper 2005

WAVE PROPAGATION IN A CURVED WAVEGUIDE WITH
WAVE PROPAGATION IN A CURVED WAVEGUIDE WITH

7 Frequency response and filtering
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... In some applications, such as audio, the phase response of a filter has very little effect on perceived sound so it is sufficient to consider only the amplitude response In other applications, such as television, phase characteristics are important In general, for distortion-less filtering of a sign ...
User's Manual Model 701944/701945 100:1 Probe
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DC/DC converter testing with Fast Load Transient
DC/DC converter testing with Fast Load Transient

CHAPTER 31 Alternating-Current Circuits
CHAPTER 31 Alternating-Current Circuits

General Description Features Pin Assignment Block Diagram 8312I
General Description Features Pin Assignment Block Diagram 8312I

... All parameters measured at fMAX unless noted otherwise. NOTE 1: Measured from the VDD/2 of the input to VDDO/2 of the output. NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions. Measured at VDDO/2. NOTE 3: Defined as skew between outputs on different de ...
DATA  SHEET TDA8541 1 W BTL audio amplifier
DATA SHEET TDA8541 1 W BTL audio amplifier

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Lecture 4: Transformers

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A CBIA BIOAMPLIFIER WITH HIGH GAIN ACCURACY

... Electrical signals produced in the human body can be used for medical diagnosis and research, treatment of diseases, pilot safety etc. These signals are extracted using an electrode (or transducer) to convert the ion current in the body to electron current. After the electrode, the very low amplitud ...
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AD8312 数据手册DataSheet 下载

... dB of dynamic range. The overall accuracy at the extremes of this total range, viewed as the deviation from an ideal logarithmic response, that is, the law-conformance error, can be judged by reference to Figure 3 through Figure 8, which show that errors across the central 40 dB are moderate. These ...
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... TYPICAL CHARACTERISTICS: VS+ – VS– = 3.3 V (continued) At VS+ = +3.3 V, VS– = 0 V, VOCM = open, VOUT = 2 VPP (differential), RL = 1 kΩ differential, G = 1 V/V, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted. Graphs are plotted for room t ...
DC/DC converter testing with Fast Load Transient
DC/DC converter testing with Fast Load Transient

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... expected that the residual reflections do not significantly influence the behavior of the modulator. However, if the model were extended to the analysis of an integrated laser-EAM structure, the approximation would no longer be acceptable. In fact, since the power reflected from the modulator sectio ...
Fundamentals Of Electric Circuits-Charles K. Alexander, Matthew
Fundamentals Of Electric Circuits-Charles K. Alexander, Matthew

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2 The design of Main

and right-handed transmission peaks near the magnetic resonance
and right-handed transmission peaks near the magnetic resonance

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Cascaded H-bridge multilevel inverters

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Distribution Loss Factors - Australian Energy Regulator

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AC POWER

< 1 ... 5 6 7 8 9 10 11 12 13 ... 93 >

Standing wave ratio



In radio engineering and telecommunications, standing wave ratio (SWR) is a measure of impedance matching of loads to the characteristic impedance of a transmission line or waveguide. Impedance mismatches result in standing waves along the transmission line, and SWR is defined as the ratio of the partial standing wave's amplitude at an antinode (maximum) to the amplitude at a node (minimum) along the line.The SWR is usually thought of in terms of the maximum and minimum AC voltages along the transmission line, thus called the voltage standing wave ratio or VSWR (sometimes pronounced ""viswar""). For example, the VSWR value 1.2:1 denotes an AC voltage due to standing waves along the transmission line reaching a peak value 1.2 times that of the minimum AC voltage along that line. The SWR can as well be defined as the ratio of the maximum amplitude to minimum amplitude of the transmission line's currents, electric field strength, or the magnetic field strength. Neglecting transmission line loss, these ratios are identical.The power standing wave ratio (PSWR) is defined as the square of the VSWR, however this terminology has no physical relation to actual powers involved in transmission.The SWR can be measured with an instrument called an SWR meter. Since SWR is defined relative to the transmission line's characteristic impedance, the SWR meter must be constructed for that impedance; in practice most transmission lines used in these applications are coaxial cables with an impedance of either 50 or 75 ohms. Checking the SWR is a standard procedure in a radio station, for instance, to verify impedance matching of the antenna to the transmission line (and transmitter). Unlike connecting an impedance analyzer (or ""impedance bridge"") directly to the antenna (or other load), the SWR does not measure the actual impedance of the load, but quantifies the magnitude of the impedance mismatch just performing a measurement on the transmitter side of the transmission line.
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