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Topic: Electronic amplifier

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In the News (Fri 24 May 19)

  Amplifier with digital control - Patent 4124877
In electronic amplifiers it is desirable to have the capability of accurate setting of the characteristic values while still having a limited space on a front panel.
The electronic amplifier unit of claim 1, wherein the cross-sectional area of the amplifier part is less than the area of the mounting opening in the panel needed for the digital switch alone.
The electronic amplifier unit of claim 1, wherein the electronic amplifier unit is mounted in the same manner and with the same securing means into the opening in the panel as the digital switch alone would be mounted.
www.freepatentsonline.com /4124877.html   (1308 words)

 Single-ended and differential amplifiers : OPERATIONAL AMPLIFIERS
For ease of drawing complex circuit diagrams, electronic amplifiers are often symbolized by a simple triangle shape, where the internal components are not individually represented.
The amplifier is still being supplied with 30 volts overall, but with the split voltage DC power supply, the output voltage across the load resistor can now swing from a theoretical maximum of +15 volts to -15 volts, instead of +30 volts to 0 volts.
A "shorthand" symbol for an electronic amplifier is a triangle, the wide end signifying the input side and the narrow end signifying the output.
www.allaboutcircuits.com /vol_3/chpt_8/2.html   (1264 words)

 Electropneumatic position regulator - Patent 4855659
an electronic amplifier arranged between the reporting device and the second coil of the input circuit, the amplifier having setting elements for establishing a linear region of the position regulator to match a stroke of the pneumatic setting device.
From the output of the amplifier element, a line 22 leads to a pneumatic setting device 23 so as to act on the latter with a setting pressure P.sub.st which is dependent on the position of the balance arm 17 and/or the impact plate with respect to the air nozzle 18.
An output 6 of the dc voltage amplifier element is connected, via a coupling resistor 34, to a base of a transistor 35 whose collector is connected to the potentiometer 36.
www.freepatentsonline.com /4855659.html   (2356 words)

 Lessons In Electric Circuits -- Volume III (Semiconductors) - Chapter 8
In electronics, transconductance is the mathematical ratio of current change divided by voltage change (ΔI / Δ V), and it is measured in the unit of Siemens, the same unit used to express conductance (the mathematical reciprocal of resistance: current/voltage).
That triode amplifies and inverts the output of the differential pair for a larger voltage gain, then the amplified signal is coupled to the second triode of the same dual-triode tube in a noninverting amplifier configuration for a larger current gain.
As it was in the vacuum tube circuit, the purpose of a differential pair is to amplify and convert a differential voltage between the two input terminals to a single-ended output voltage.
www.ibiblio.org /obp/electricCircuits/Semi/SEMI_8.html   (14864 words)

  Electronic Amplifier
But because the electron tube was still expensive, they decided to develop an improved home record player that was non-electronic, playing the records acoustically just as they had been played for decades.
A preamplifier (preamp) is an electronic amplifier which precedes another amplifier to prepare an electronic signal for further amplification or processing.
In general, the function of a preamp is to amplify a low level signal (possibly at high impedance) to line-level.
www.lycos.com /info/electronic-amplifier.html   (479 words)

  PowerPedia:Amplifier - PESWiki
The relationship of the input to the output of an amplifier — usually expressed as a function of the input frequency — is called the transfer function of the amplifier, and the magnitude of the transfer function is termed the gain.
One common type of amplifier is the electronic amplifier, commonly used in radio and television transmitters and receivers, high-fidelity ("hi-fi") stereo equipment, microcomputers and other electronic digital equipment, and guitar and other instrument amplifiers.
Amplifiers are commonly classified by the conduction angle (sometimes known as 'angle of flow') of the input signal through the amplifying device; see electronic amplifier.
peswiki.com /index.php/PowerPedia:Amplifier   (2142 words)

  Electronic amplifier Details, Meaning Electronic amplifier Article and Explanation Guide
Amplifier circuits are classified as A, B, AB and C for analogue designs, and class D and E for switching designs.
In an analogue amplifier, the signal is applied to the input terminal of the device (base, gate or grid), and this causes a current to flow in proportion to the input between the output terminal and ground (collector, drain or anode).
While amplifying devices can be treated as linear over some portion of their characteristic curve, they are inherently non-linear; their physics dictates that they operate using a square law.
www.e-paranoids.com /e/el/electronic_amplifier.html   (2729 words)

 Amplifier Summary
Amplifiers are not only a fundamental component of radios, televisions and telephones, they are essential to all modern electronics.
Amplifiers today are used in devices never imagined by the early inventors: compact disk players, tape recorders, radar, digital computers, servomechanisms, and electronic musical instruments are only a few of the inventions that depend upon amplifiers for their operation.
An amplifier can be considered to be any device that uses a small amount of energy to control a source of a larger amount of energy, although the term today usually refers to an electronic amplifier.
www.bookrags.com /Amplifier   (2438 words)

 Electronic_amplifier - The Wordbook Encyclopedia   (Site not responding. Last check: )
Amplifier design is always a compromise of numerous factors, such as cost, amount of power consumed, devices that have real-world imperfections, and the need to match the amplifier to the input signal as well as the output load.
An RF amplifier refers to an amplifier designed for use in the radio frequency range of the electromagnetic spectrum, and is often used to increase the sensitivity of a receiver or the output power of a transmitter.
Class D amplifiers were widely used to control motors, and almost exclusively for small DC motors, but they are now also used as audio amplifiers, with some extra circuitry to allow analogue to be converted to a much higher frequency pulse width modulated signal.
www.thewordbook.com /Electronic_amplifier   (6155 words)

 Edmunds Gages - Glossary of gaging terms
When connected to air or electronic gage tooling, readings are amplified many times, allowing the user to easily read the size being measured.
In systems where the air amplifier has adjustable magnification, this is accomplished by adjusting the flow or back-pressure within the amplifier to agree with the master sizes.
On systems that have an air amplifier with fixed magnification, it is essential that the air gage tooling is precise so that full amplification can be achieved.
www.edmundsgages.com /references1.htm   (470 words)

 Online Etymology Dictionary
The electronic amplifier first attested 1914; shortened form amp is from 1967.
coined 1891, from electric; electronic is 1902 in the sense of "pertaining to electrons;" 1930 as "pertaining to electronics." Electronics (1910) is the branch of physics and technology concerned with the penomenon of electrons in vacuums, gas, semi-conductors, etc.
E-mail is from 1982, shortened from electronic mail (1977); this led to the contemptuous application of snail mail (1983) to the old system.
www.etymonline.com /index.php?search=electronic   (845 words)

 Single-Ended And Differential Amplifiers - Operational Amplifiers
For ease of drawing complex circuit diagrams, electronic amplifiers are often symbolized by a simple triangle shape, where the internal components are not individually represented.
The amplifier is still being supplied with 30 volts overall, but with the split voltage DC power supply, the output voltage across the load resistor can now swing from a theoretical maximum of +15 volts to -15 volts, instead of +30 volts to 0 volts.
A "shorthand" symbol for an electronic amplifier is a triangle, the wide end signifying the input side and the narrow end signifying the output.
www.opamp-electronics.com /tutorials/single_ended_and_differential_amplifiers_3_08_02.htm   (1273 words)

 FIIG A322 Index
An electronic device which applies voltage or current to the deflection elements in a cathode ray tube in a way to make the deflection for the electron beam a known function of time or other data base, against which other periodically occurring electrical phenomena may be examined, compared, or measured.
An electronic device which, in accordance with an intelligence signal, varies the frequency of a radio transmitter to which it is connected.
An electronic device consisting of the necessary elements to establish the upper and lower limits and to effect the variation (continuous or in steps) of the frequency of a tuned circuit by means of an integral variable capacitor, inductor, cavity, or line.
www.dlis.dla.mil /FIIGDATA/A3220/ainindex.htm   (4678 words)

 Electronics Lab - Home
The circuit incorporates an electronic output current limiter that effectively controls the output current from a few milliamperes (2 mA) to the maximum output of 3A that the circuit can deliver.
This feature makes this power supply indispensable in the experimenters laboratory as it is possible to limit the current to the typical maximum that a circuit under test may require, and power it up then, without any fear that it may be damaged if something goes wrong.
There is also a visual indication that the current limiter is in operation so that you can see at a glance that your circuit is exceeding or not its preset limits.
electronics-lab.com   (663 words)

 /AMPLIFIER - PREAMPLIFIER - Metronome technologie - Manufacturer
/AMPLIFIER - PREAMPLIFIER : Metronome technologie is a French company founded in 1987.
The main objective of Metronome is to access to the best sound that digital can provide applying the most advanced technology available.
Each important electronic component have one dedicated power regulation, to increase performances and decrease perturbations.
www.metronome-technologie.com /Amplifier.php   (281 words)

 Radio Electronics For Beginners   (Site not responding. Last check: )
Electric signal feedback in electronic amplifier is when some of the electric output voltages and currents are seen back to the amplifier input section which in the case of a bipolar transistor is the base b junction of the transistor.
This indicates that the amplifier circuit is working as an amplifier and that the positive and negative electric ratios are at required values to produce high input electric sensitivity at transistor Q emitter-base input.
kilogram is the mass of the electron and r is the radius distance between the centres of the electron and proton of atom in the copper wire.
science.radioelectronics.biz /radioelectronics/startmanual   (7012 words)

 Electronic signal amplifier and method and article for determining the gain of such an amplifier patent invention   (Site not responding. Last check: )
Each branch comprises a transistor having a control electrode connected to an intermediate terminal of the input inductor, a first main electrode connected to a first terminal of the power source, and a second main electrode connected to a second terminal of the power source via a capacitor.
Finally, the second output of the cell CN is connected to an output 2o of the amplifier via an inductor (N+1)4.
In order to obtain an amplifier with a high output current capability, there must be a sufficiently large number of amplification cells N. Usually, N is equal to at least 3, implying that the amplifier comprises at least 8 inductors which leads to a high cost of production for the amplifier.
www.freshpatents.com /Electronic-signal-amplifier-and-method-and-article-for-determining-the-gain-of-such-an-amplifier-dt20050901ptan20050189994.php   (1388 words)

 Glossary: Amplifier, Instrument | Sweetwater.com
An instrument amplifier is an electronic amplifier designed for use with an electric or electronic musical instrument, such as an electric guitar or electric piano/keyboard.
The separate amplifier is called an amplifier head and is commonly placed on top of one or more loudspeaker enclosures, the amplifier head and loudspeaker enclosures together forming an amplifier stack.
Acoustic amplifiers, similar in many ways to keyboard amplifiers but designed specifically to produce an "acoustic" sound when used with acoustic instruments with built-in pickups.
www.sweetwater.com /expert-center/glossary/t--Amplifier,Instrument   (386 words)

Connect the other electronic equipment, such as preamplifiers, EQ units, tuners, and interior speakers to the sound system.
Installing the SLS here will protect the amplifier and other electronic equipment from any lightning surge that may occur if that exterior speaker line running between Building 1 and Building 2 is induced by lightning.
Installing the SLS here will protect the amplifier and other electronic equipment from any lightning surge that may occur if that exterior speaker line running between is induced by lightning.
www.grommesprecision.com /precisionelectronics/applications/productapplications/slstlsapplication.htm   (1899 words)

 Amplifier Circuits - Audio Amp Schematics, Page 3 - free electronic circuit links
Headphone Amplifier (circuitdb): Both halves of the circuit are identical.
HI FI Class D Audio Power Amplifier: The purpose of this site is to share a pulse-width modulating Class D audio power amplifier design with the world, in order to involve people that have an interest in this kind of technology.
Linear FM 50 Watt Amplifier with BLY90: A amplifier of force RF for the FM, is always essential for the amateur that wants it strengthens some small transmitter, that likely already it has manufactured or has been supplied ready.
www.discovercircuits.com /A/a-audioamp3.htm   (839 words)

 Expert: RF, Microwave, Analog Electronics Expert
Expert has spent most of his career involved with the design of RF and microwave electronic circuits and systems including AM, FM, and television transmitting and receiving equipment as well as military electronic systems.
Expert has taught RF design courses for 20 years at the college level and is co-authoring a book on RF electronics and amplifier design.
In particular, his experience includes the design of small and large signal amplifiers, low noise amplifiers, oscillators, modulators and demodulators, frequency synthesizers, microwave antennas, monolithic microwave integrated circuits (MMICs), and multichip modules (MCMs).
www.intota.com /viewbio.asp?bioID=604246&perID=715034&show=Full   (518 words)

 50W Electronic Amplifier Constructional Project
This electronic amplifier project is based on an IC amplifier module from ST Microelectronics, the TDA7294.
It is intended for use as a high quality audio class AB amplifier in hi-fi applications.
You may download the full data sheet for the Electronic Amplifier TDA7294 here from ST website.
www.electronics-project-design.com /ElectronicAmplifier.html   (523 words)

The original remote control was missing and I did already make a new one, which controls zoom, brightness, focus and switching between align/view modes.
Electronic display and printer unit for a high precision spherometer.
This is the electronics board from a WYKO LADITE Interferometer.
www.astro-electronic.de /interf.htm   (1425 words)

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