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2011_6_june_Griffith_CSISCS_slides
2011_6_june_Griffith_CSISCS_slides

CPI 2000 - Woody`s CB GAZETTE
CPI 2000 - Woody`s CB GAZETTE

... C255 resonate at 27 MHz on the output of Q223. This output is fed into the gate of JFET mixer Q201. The source of Q201 is fed with local oscillator signal by Q206. The 10.200 MHz IF output of Q201 is fed through a delay network, consisting of L211, L214, C296, C297 and C258. The delay network is req ...
投影片 1
投影片 1

... amplifier to achieve broadband and low noise. 3. The common source single-stage amplifier is cascaded to the conventional distributed amplifier to improve the gain at high frequency. 4. The measured a.gain of the integrated LNA is 10dB b.3dB bandwidth from 2.7 to 9.1 GHz c. average noise figure is 4 ...
Negative Feedback - Learn About Electronics
Negative Feedback - Learn About Electronics

... DC negative feedback, is used in stabilising the biasing of amplifiers against drift due to thermal effects etc. Because negative feedback amplifiers often use direct coupling and may have several stages of amplification, stable bias conditions are essential. Very small changes in bias in an early s ...
Multi Stage Amplifiers
Multi Stage Amplifiers

... The first cut off frequency lies in low frequency range, in which the impedance by coupling capacitor Cc is comparable to the collector resistance Rc. Thus it largely the current amplification. The second cut-off frequency lies in the high frequency range where the area offered by coupling capacitor ...
High-Speed Data Communication LA302Z – 10 GHz Differential
High-Speed Data Communication LA302Z – 10 GHz Differential

... The LA302Z is an ultra-broadband fully differential limiting amplifier designed for highspeed wide-band communication applications up to 10 Gb/s. The amplifier has an excellent input sensitivity of 2.5 mVpp and a small-signal bandwidth of 10 GHz. Its wide bandwidth and high sensitivity ensure a low ...
A dual-polarity, bidirectional current-shunt monitor
A dual-polarity, bidirectional current-shunt monitor

... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
Two Way Audio Communications Using the
Two Way Audio Communications Using the

... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
Single-Supply Operation of Isolation Amplifiers
Single-Supply Operation of Isolation Amplifiers

... FIGURE 2. Single Supply Operation of the ISO120 Isolation Amplifier. The accuracy of the INA105 difference amplifier relies on careful resistor ratio matching (R3/R4 = R1/R2). Any source impedance of the signal (RS) adds to the difference resistor (R3). For low source impedances, the error is accept ...
owner`s manual - Audio networking
owner`s manual - Audio networking

... Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point they exit from the apparatus. Only use attachments/accessories provided by the manufacturer. Use only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or ...
Further Development of a High Gain Microphone
Further Development of a High Gain Microphone

... have a built-in circuitry for impedance matching. This circuit may also include amplification and filtering. The active circuit usually makes the microphone less prone to interaction with the load that it is driving. Active microphones are either powered by their own external power supply or by so c ...
Sound Healing Tools
Sound Healing Tools

... the bees’ flight patterns, I began to feel their rhythms, to hear the warm healing sound of their drone. I also recorded a ruby-throated hummingbird, a fruit bat, and baby crows nesting in a tree above one of the beehives in Kate’s beautiful apiary. On this record, I explore the personality or “vibr ...
3.1 Definitions - Telecommunications Industry Association
3.1 Definitions - Telecommunications Industry Association

... interface used to transmit and/or receive signals which may require greater than voiceband frequency spectrum over private line metallic channels designated Local Area Data Channels (LADC). These leads are treated as ‘‘telephone connections’’ for the purpose of fulfilling approval conditions, or as ...
BF044352356
BF044352356

... symmetrical differential amplifier, Ac is zero and the CMRR is infinite. Note that a differential amplifier is a more general form of amplifier than one with a single input; by grounding one input of a differential amplifier, a single-ended amplifier results. An operational amplifier, or op-amp, is ...
service manual - Audio Lab of Ga
service manual - Audio Lab of Ga

... feature to protect the speaker and amplifier from initial current surges. The circuit also provides protection from over-current conditions by de-activating the relay when excessive output current is sensed. The relay and it’s control circuitry is located on the Filter/Driver Board and consists of U ...
control and monitoring control and monitoring
control and monitoring control and monitoring

... 100% of the power at only the lowest possible ambient, and proportionally reduces the power delivered as the ambient rises. APC reduces operating costs up to 80% when compared to conventional ambient control for winterization. Higher process temperatures can also be controlled with APC. This approac ...
Aalborg Universitet Envelope Signals
Aalborg Universitet Envelope Signals

IV. Measuring Return Ratio at the Terminals of a Dependent Source
IV. Measuring Return Ratio at the Terminals of a Dependent Source

... where AOLiy, AOLix , AOLvy, and AOLvx are the open-loop gains for output signals iy, ix, vy, and vx, respectively; Gi and Gv are the input transmissions from it and vt sources; Diy and Dix are the direct transmissions from it source to output signals iy and ix; Dvy and Dvx are the direct transmissio ...
Extend the I C-bus with advanced repeaters and hubs NXP 2-channel I
Extend the I C-bus with advanced repeaters and hubs NXP 2-channel I

doc
doc

... The objective of the DESPEC Advanced Implantation Detector Array (AIDA) project is to develop, commission and exploit a state of the art silicon detector array for decay spectroscopy experiments using the SuperFRS fragment separator at the FAIR accelerator facility based at GSI, Darmstadt, Germany. ...
PowerPoint 簡報
PowerPoint 簡報

...  It should be noted that each optical channel is completely independent of the other optical channels. It may run at its own rate (speed) and use its own encodings and protocols without any dependence on the other channels at all.  All of the current systems use a range of wavelengths between 1540 ...
Chapter 1: The Basics
Chapter 1: The Basics

... full-volume overdrive tones at lower volumes, without sacrificing tone quality. This approach avoids the "buzzy" sound characteristic of master volume amplifiers. The attenuator features 0dB, -3dB, -6dB, -9dB, and -12dB positions, as well as a VAR position which enables a second, continuously-variab ...
TEMPORARY THRESHOLD SHIFT (TTS): CAUSES, EFFECTS AND
TEMPORARY THRESHOLD SHIFT (TTS): CAUSES, EFFECTS AND

... • A HEARING THRESHOLD IS THE LOWEST LEVEL OF SOUND THAT CAN BE DETECTED AT A GIVEN FREQUENCY • A THRESHOLD SHIFT IS AN ELEVATION IN HEARING THRESHOLD • A TTS IS RECOVERABLE OVER TIME (I.E. TEMPORARY) ...
III. Obsrvations and Discussions
III. Obsrvations and Discussions

... or in respective amplifier circuits are suggested by researchers to conquer this problem [2]-[11]. These efforts include the use of devices different than BJTs or hybrid combination of devices (e.g. BJT-JFET or BJT-MOSFET etc.) in Darlington’s topology and, moreover, using some additional biasing co ...
SWITCHGEAR - National Grid
SWITCHGEAR - National Grid

... defined in the Bilateral agreement. The principles of this document applies to equipment connected at other voltages”. This document defines the technical requirements for switchgear connected to the National Grid Electricity Transmission System at 400kV, 275kV, 132kV. The principles of this documen ...
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Public address system



A public address system (PA system) is an electronic sound amplification and distribution system with a microphone, amplifier and loudspeakers, used to allow a person to address a large public, for example for announcements of movements at large and noisy air and rail terminals or at a sports stadium. The term is also used for systems which may additionally have a mixing console, and amplifiers and loudspeakers suitable for music as well as speech, used to reinforce a sound source, such as recorded music or a person giving a speech or distributing the sound throughout a venue or building.Simple PA systems are often used in small venues such as school auditoriums, churches, and small bars. PA systems with many speakers are widely used to make announcements in public, institutional and commercial buildings and locations. Intercom systems, installed in many buildings, have microphones in many rooms allowing the occupants to respond to announcements.Sound reinforcement systems and PA systems may use some similar components, but with differing application, although the distinction between the two is not clear-cut. Sound reinforcement systems are for live music or performance, whereas PA systems are primarily for reproduction of speech. In Britain any PA system is sometimes colloquially referred to as a Tannoy, after the company of that name now owned by TC Electronic Group, which supplied a great many of the PA systems used previously in Britain.
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