- published: 13 Jul 2009
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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.
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