• 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
TD class note 3
TD class note 3

Lecture note from 21-26 Lecture 21 Problem Solving 1) A single
Lecture note from 21-26 Lecture 21 Problem Solving 1) A single

... application. About 1960 control electrodes were added to silicon diodes, giving siliconcontrolled-rectifiers (SCRs or Thyristors). In 1961 the cross channel link between England and France was put into operation. The a.c. systems were connected by two single conductor submarine cables (64km) at ± 10 ...
EENG 1920 Ch 5
EENG 1920 Ch 5

... Upfront time saves redesign time later Sub-modules should have similar complexity Precise input, output, and behavior specifications Look for innovation Don’t decompose ad infinitium Use suitable abstraction to describe sub-modules Look at how it has been done before Use existing technology Keep it ...
Disconnect Switches
Disconnect Switches

... • There are many purposes for disconnect switches in substations and power lines. • They are used to isolate or deenergize equipment for maintenance purposes, transfer load from one source to another in planned or emergency conditions, provide visual openings for maintenance personnel, and other rea ...
vs Guiderev3
vs Guiderev3

... Resonant Free Enclosure Design - The cabinetry of your V Series 2 monitor is constructed from inert medium density fiberboard. It is internally braced and carefully damped to minimize cabinet resonance. ...
DN05033/D - ON Semiconductor
DN05033/D - ON Semiconductor

... This Design Note describes a very simple, low cost, primary side controlled, off-line flyback power supply using ON Semiconductor’s NCP1251B current mode controller (TSOP6 package) and an NDD04N60 D-Pak Mosfet. The design dispenses with the conventional TL431/optocoupler feedback scheme and uses pri ...
Inverter Generator Basics Unlike conventional generators, which
Inverter Generator Basics Unlike conventional generators, which

... hundred overlapping sine waves per revolution), the core doesn’t need to operate at a fixed speed to maintain regulation. Inverter generators are lighter, quieter, and more fuel efficient because generator speed is automatically adjusted to match load conditions. Inner Workings A conventional genera ...
AH979H
AH979H

Ultrasonic RADAR - IITB-EE
Ultrasonic RADAR - IITB-EE

... given to it. Interrupt generator circuit comprises of a Schmitt trigger which gives a high output whenever its input is above a threshold value or else it remains at low value (0v). The output of the Schmitt trigger is inverted with respect to the input signal, hence in order to restore the phase we ...
THAT Corporation Design Note 106
THAT Corporation Design Note 106

CC-STS - Crest Audio
CC-STS - Crest Audio

... satisfy local building codes for emergency voice announcement systems. These systems are typically referred to as “supervised” installations where each amplifier senses a tone that is looped back to the STS module. As a CC style module it is intended to operate in a stand alone amplifier or can be u ...
The next stage in power semiconductors
The next stage in power semiconductors

... that a designer can choose faster switching to obtain better system efficiency, or slower switching to improve inverter efficiency through reduced losses. IGCTs also make possible other designs that have not been feasible in the past. With these devices, engineers do not have to design around IGBT a ...
X01414271431
X01414271431

... attempts to recover the transmitted symbols. It has been seen that linear equalizers show poor performance, where as nonlinear equalizer provide superior performance. Since a considerable part of the power consumption is due to the analog baseband filters, improved and novel analog filter design app ...
ee 420 – engineering electronics ii
ee 420 – engineering electronics ii

pgt110 * multimedia technology
pgt110 * multimedia technology

...  The use of a single twisted pair, copper wire connection  two wires are required to complete the electrical circuit, with the current in one wire opposite to the current in the other, and both wires carry the information signal ...
700-HP : UltraHigh-Power Subwoofer
700-HP : UltraHigh-Power Subwoofer

... resulting in the 700-HP subwoofer's effortless reproduction of low-frequency transient information. The transducers, amplification and control electronics of the selfpowered 700-HP are created as a symbiotic system that optimizes performance and maximizes its tremendous power. ...
Slide 1
Slide 1

... • The generating company provides the ISO with generation offers consisting of prices and quantities, for each hour. • The distribution company aggregate loads for each hour and provide this information to the ISO. If different rates are offered, it also submits demand bids. • The ISO clears the mar ...
Chap_15_B
Chap_15_B

A transistor inverter (NOT gate)
A transistor inverter (NOT gate)

Mar 2008 - Tiny, Fast and Efficient Comparator Regenerates Clock Signals up to 3MHz
Mar 2008 - Tiny, Fast and Efficient Comparator Regenerates Clock Signals up to 3MHz

... rent when the output changes states (typically problematic in CMOS output stages). The result is an output stage with three times better swing than the typical bipolar output stage and much lower shoot-through current than the typical CMOS output stage, allowing the LTC6702 to maintain its efficient ...
SS-CT100D/WGV100D/ZX80DP/ ZX100D/ZX100DP
SS-CT100D/WGV100D/ZX80DP/ ZX100D/ZX100DP

... Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350 ˚C. Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so ...
MODULE 5_Market and System Operations_ Tx and Dx
MODULE 5_Market and System Operations_ Tx and Dx

... demand is projected to flatten or decline, like for like replacement of transmission assets commissioned decades ago may lead to asset underutilization. The need to replace aging transmission assets will present opportunities to better align investments with evolving power system priorities, includi ...
lect23-io
lect23-io

...  A 4-layer PCB contains power and ground planes on the inner layers and signals on the outer layers. The board uses 1 oz copper (1.4 mils thick) and the FR4 dielectric is 8.7 mils thick. How wide should the traces be to achieve 50  characteristic impedance?  This is a microstrip design. Solve for ...
RFVC1803C 数据资料DataSheet下载
RFVC1803C 数据资料DataSheet下载

... Exceeding any one or a combination of the Absolute Maximum Rating conditions may cause permanent damage to the device. Extended application of Absolute Maximum Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Abs ...
May 2002 Efficient DC/DC Converter Provides Two 15A Outputs
May 2002 Efficient DC/DC Converter Provides Two 15A Outputs

... ASICs and FPGAs from a low input voltage. The first technique uses an internal boost regulator to provide a separate 5V for the MOSFET gate drive. Secondly, its Burst Mode operation achieves high efficiency at light loads. Lastly is the out-of-phase technique which minimizes input RMS losses and red ...
< 1 ... 139 140 141 142 143 144 145 146 147 ... 174 >

Transmission line loudspeaker

A transmission line loudspeaker is a loudspeaker enclosure design (topology) that uses an acoustic transmission line within the cabinet, compared to the simpler enclosures used by sealed (closed) or ported (bass reflex) designs. Instead of reverberating in a fairly simple damped enclosure, sound from the back of the bass speaker is directed into a long (generally folded) damped pathway within the speaker enclosure, which allows far greater control and use of speaker energy, and the resulting sound.Inside a transmission line loudspeaker, is a (usually folded) pathway into which the sound is directed. The pathway is often covered with varying types and depths of absorbent material, may vary in size or taper, and may be open or closed at its far end. Used correctly, such a design ensures that undesired resonances and energies, which would otherwise cause undesirable auditory effects, are instead selectively absorbed or reduced (""damped"") due to the effects of the duct, or alternatively only emerge from the open end in phase with the sound radiated from the front of the driver, enhancing the output level (""sensitivity"") at low frequencies. The transmission line acts as an acoustic waveguide, and the padding both reduces reflection and resonance, and also slows the speed of sound within the cabinet to allow for better tuning.Transmission line loudspeakers designs are more complex to implement, making mass production difficult, but their advantages have led to acclaim for a number of manufacturers such as IMF, TDL, PMC, KVART & BØLGE and the like. As a rule, transmission line speakers tend to have exceptionally high fidelity low frequency response far below that of a typical speaker or subwoofer, into the infrasonic (British company TDL's studio monitor range from the 1990s quoted their frequency responses as starting from as low as 7 Hz depending upon model) at sensitivity 96 dB, without need for a separate enclosure or driver. Acoustically, TL speakers roll off slower at low frequencies and provide better driver control than standard reflex cabinet designs, are less sensitive to positioning, and tend to create a very spacious soundstage. Modern TL speakers were described in a 2000 review as ""match[ing] reflex cabinet designs in every respect, but with an extra octave of bass, lower LF distortion and a frequency balance which is more independent of listening level"".Although more complex to design and tune, and not as easy to analyze and calculate as other designs, the transmission line design is valued by several smaller manufacturers, as it avoids many of the major disadvantages of other loudspeaker designs. In particular, the basic parameters and equations describing sealed and reflex designs are fairly well understood, the range of options involved in a transmission line design mean that the general design can be somewhat calculated but final transmission line tuning requires considerable attention and is less easy to automate.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report