- published: 13 Jul 2009
- views: 67130663
An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the power of a signal.
It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. In this sense, an amplifier modulates the output of the power supply to make the output signal stronger than the input signal. An amplifier is effectively the opposite of an attenuator: while an amplifier provides gain, an attenuator provides loss.
An amplifier can either be a separate piece of equipment or an electrical circuit within another device. The ability to amplify is fundamental to modern electronics, and amplifiers are widely used in almost all electronic equipment. The types of amplifiers can be categorized in different ways. One is by the frequency of the electronic signal being amplified; audio amplifiers amplify signals in the audio (sound) range of less than 20 kHz, RF amplifiers amplify frequencies in the radio frequency range between 20 kHz and 300 GHz. Another is which quantity, voltage or current is being amplified; amplifiers can be divided into voltage amplifiers, current amplifiers, transconductance amplifiers, and transresistance amplifiers. A further distinction is whether the output is a linear or nonlinear representation of the input. Amplifiers can also be categorized by their physical placement in the signal chain.
Imran Khan Niazi (born 5 October 1952) better known as Imran Khan is a Pakistani politician, former cricketer, philanthropist, cricket commentator and former chancellor of the University of Bradford. He is also founder of the Shaukat Khanum Memorial Cancer Hospital and the Namal College, Mianwali. Khan played international cricket for two decades in the late twentieth century and, after retiring, entered politics.
Khan was Pakistan's most successful cricket captain, leading his country to victory at the 1992 Cricket World Cup, playing for the Pakistani cricket team from 1971 to 1992, and serving as its captain intermittently throughout 1982–1992. After retiring from cricket at the end of the 1987 World Cup in 1988, owing to popular demand he was requested to come back by the president of Pakistan Zia ul Haq to lead the team once again. At the age of 39, Khan led his team to Pakistan's first and only One Day World Cup victory in 1992. With 3807 runs and 362 wickets in Test cricket, he is one of eight world cricketers to have achieved an 'All-rounder's Triple' in Test matches. On 14 July 2010, Khan was inducted into the ICC Cricket Hall of Fame.
An audio power amplifier is an electronic amplifier that amplifies low-power audio signals (signals composed primarily of frequencies between 20 - 20 000 Hz, the human range of hearing) to a level suitable for driving loudspeakers. It is the final electronic stage in a typical audio playback chain.
The preceding stages in such a chain are low power audio amplifiers which perform tasks like pre-amplification (this is particularly associated with record turntable signals), equalization, tone controls, mixing/effects, or audio sources like record players, CD players, and cassette players. Most audio power amplifiers require these low-level inputs to adhere to line levels.
While the input signal to an audio power amplifier may measure only a few hundred microwatts, its output may be tens or hundreds of watts for a home stereo system or thousands or tens of thousands of watts for a concert sound reinforcement system.
The audio amplifier was invented in 1909 by Lee De Forest when he invented the triode vacuum tube. The triode was a three terminal device with a control grid that can modulate the flow of electrons from the filament to the plate. The triode vacuum amplifier was used to make the first AM radio.
Buy now Imran Khan - Satisfya on iTunes https://itunes.apple.com/us/album/satisfya/id645918186?i=645918257 Music video by Imran Khan performing Amplifier (C) 2009 more info www.imrankhanworld.com www.twitter.com/imrankhanworld www.facebook.com/imrankhanworldwide
The 1987 NAD 2200 has some impressive specs. This vintage 2 channel audio amplifier is said to deliver up to 1600 watts bridged at 4 ohms dynamically. Quite an incredible feat for a 100w/ch rated amplifier. Is it possible this 30 plus year old amp can post these kinds of numbers? Or does it show it's age and let out the magic smoke? Only one way to find out... Find NAD 2200 Amps here: https://goo.gl/1p32G2 See the Raytek IR Temp Gun here: http://amzn.to/2sSiVAA Accessories provided by: Stinger Electronics Website - http://goo.gl/UtHk6e Stinger Electronics Facebook - https://goo.gl/3r1Irx Phoenix Gold/Stinger Instagram - https://goo.gl/AxOR3G AAMP Global Facebook - https://goo.gl/R7iV2k AAMP Global Instagram - https://goo.gl/c4pSXb Make sure you are subscribed to my channel so you'll re...
Edit schematic and convert it into PCB here: https://easyeda.com/editor#id=74409197e62e4ff6b09d45ef043d3e9b Support me for more videos: https://www.patreon.com/GreatScott Previous video: https://youtu.be/X0ihx9_1iFY Class AB Audio Amp video: https://youtu.be/oGTXczCV30A Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab More project information (schematic pictures,....) on Instructables: https://www.instructables.com/id/DIY-Class-D-Audio-Amplifier Thanks to EasyEDA for sponsoring this video. Free circuit design tool with 200,000 users: https://easyeda.com $5 for10pcs 2-layer 10x10cm PCB prototype here: https://easyeda.com/order Wide selection in-stock components: https://lcsc.com Parts list (Incomplete, see Instructables for Ebay and Amazon.de):...
DIY - Tutorial make Circuit amplifier Simple Materials to include: - Potentiometer 50k ohm - 2 x Capacitor 25v 47µF, 2 x 16v 100µF, 1 x 25v 10µF, 1 x 16v 220µF, 1 x 16v 1000µF - 1 x IC LA4440, radiators, 2 x screws - 1 resistor 1000Ω, 1 220Ω - 1 x Adapter 12v 1A, 12v DC jack, Cardboad 4x5cm - Wired Headset old, Wire, Speaker - Circuit boards PCB, Circuit principles http://goo.gl/pwacuq Creative Channel , Wish you finish Don't Forget LIKE, Share VIDEO & Subscribe My Channel
My website: rickcperry.com This is a video on how I clean out the dust from an audio amplifier. Enjoy!
Make a Great Sounding LM386 Audio Amplifier with Bass Boost In this tutorial, I'll first show you how to make a basic audio amplifier with an LM386 IC to demonstrate the minimum parts needed to build a functional amplifier. Then I'll build a much better sounding amplifier by adding multiple de-coupling capacitors to the power supply and the input and output signal lines. Lastly, I will add a bass boost control to the circuit. LM386: http://www.circuitbasics.com/1vll The full tutorial can be found here: http://www.circuitbasics.com/iq0x Check out the Circuit Basics blog for articles and tutorials on the Raspberry Pi, Arduino and other DIY electronic projects! http://www.circuitbasics.com Facebook: http://www.circuitbasics.com/facebook Twitter: http://www.twitter.com/circuitbasics Ins...
Buy now Imran Khan - Satisfya on iTunes https://itunes.apple.com/us/album/satisfya/id645918186?i=645918257 Music video by Imran Khan performing Amplifier (C) 2009 more info www.imrankhanworld.com www.twitter.com/imrankhanworld www.facebook.com/imrankhanworldwide
The 1987 NAD 2200 has some impressive specs. This vintage 2 channel audio amplifier is said to deliver up to 1600 watts bridged at 4 ohms dynamically. Quite an incredible feat for a 100w/ch rated amplifier. Is it possible this 30 plus year old amp can post these kinds of numbers? Or does it show it's age and let out the magic smoke? Only one way to find out... Find NAD 2200 Amps here: https://goo.gl/1p32G2 See the Raytek IR Temp Gun here: http://amzn.to/2sSiVAA Accessories provided by: Stinger Electronics Website - http://goo.gl/UtHk6e Stinger Electronics Facebook - https://goo.gl/3r1Irx Phoenix Gold/Stinger Instagram - https://goo.gl/AxOR3G AAMP Global Facebook - https://goo.gl/R7iV2k AAMP Global Instagram - https://goo.gl/c4pSXb Make sure you are subscribed to my channel so you'll re...
Edit schematic and convert it into PCB here: https://easyeda.com/editor#id=74409197e62e4ff6b09d45ef043d3e9b Support me for more videos: https://www.patreon.com/GreatScott Previous video: https://youtu.be/X0ihx9_1iFY Class AB Audio Amp video: https://youtu.be/oGTXczCV30A Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab More project information (schematic pictures,....) on Instructables: https://www.instructables.com/id/DIY-Class-D-Audio-Amplifier Thanks to EasyEDA for sponsoring this video. Free circuit design tool with 200,000 users: https://easyeda.com $5 for10pcs 2-layer 10x10cm PCB prototype here: https://easyeda.com/order Wide selection in-stock components: https://lcsc.com Parts list (Incomplete, see Instructables for Ebay and Amazon.de):...
DIY - Tutorial make Circuit amplifier Simple Materials to include: - Potentiometer 50k ohm - 2 x Capacitor 25v 47µF, 2 x 16v 100µF, 1 x 25v 10µF, 1 x 16v 220µF, 1 x 16v 1000µF - 1 x IC LA4440, radiators, 2 x screws - 1 resistor 1000Ω, 1 220Ω - 1 x Adapter 12v 1A, 12v DC jack, Cardboad 4x5cm - Wired Headset old, Wire, Speaker - Circuit boards PCB, Circuit principles http://goo.gl/pwacuq Creative Channel , Wish you finish Don't Forget LIKE, Share VIDEO & Subscribe My Channel
My website: rickcperry.com This is a video on how I clean out the dust from an audio amplifier. Enjoy!
Make a Great Sounding LM386 Audio Amplifier with Bass Boost In this tutorial, I'll first show you how to make a basic audio amplifier with an LM386 IC to demonstrate the minimum parts needed to build a functional amplifier. Then I'll build a much better sounding amplifier by adding multiple de-coupling capacitors to the power supply and the input and output signal lines. Lastly, I will add a bass boost control to the circuit. LM386: http://www.circuitbasics.com/1vll The full tutorial can be found here: http://www.circuitbasics.com/iq0x Check out the Circuit Basics blog for articles and tutorials on the Raspberry Pi, Arduino and other DIY electronic projects! http://www.circuitbasics.com Facebook: http://www.circuitbasics.com/facebook Twitter: http://www.twitter.com/circuitbasics Ins...
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Danny went home and killed himself last night
She'd taken everything, she'd taken everything
Danny went home and killed himself last night
She'd taken everything, she'd taken everything
She took his cash, she took his checks
She took the soda pop, there was nothing left
She took the love letters out of his desk
Danny went home and killed himself last night
She'd taken everything, she'd taken everything
Danny went home and killed himself last night
She'd taken everything, she'd taken everything
She took his car, she took his bike
She took everything she thought he liked
And what she couldn't take, she found a way to break
She left his amplifier
An amplifier is just wood and wire
And wire and wood don't do any good when
Your heart is blazing like a wildfire
And all you've got to show for it's an
Amplifier
Amplifier
She took his gun, she took his knife
He took his drugs, they took his life
She took it all in one big haul
She left his amplifier