amplifier - ορισμός. Τι είναι το amplifier
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Τι (ποιος) είναι amplifier - ορισμός

ELECTRONIC CIRCUIT OR COMPONENT THAT INCREASES THE LEVEL OF INCOMING ELECTRICAL SIGNAL (NOT NECESSARILY AUDIO)
Amplifiers; Amplifier stage; Voltage amplifier; Signal amplifier; Signal amplifiers; Transistor amplifier; Ampllifiers; Sound amplification; Penguat peralatan; Current amplifier; Amplifire; Amplifier class; Common plate; Common cathode; Common grid; Cathode follower; Piezoelectric audio amplifier; Piezo Audio Amplifier; Single stage amplifier; Common-cathode; Power Amplifier; Electronic amplifier; Unilateral amplifier; Bilateral amplifier; Video amplifier; Microwave amplifier
  • voltage gain]]'' of 3; that is at any instant <math>v_o(t) = 3v_i(t)\,</math>
  • thumb
  • The four types of dependent source—control variable on left, output variable on right
  • De Forest's prototype audio amplifier of 1914. The [[Audion]] (triode) vacuum tube had a voltage gain of about 5, providing a total gain of approximately 125 for this three-stage amplifier.
  • op-amp]]
  • McIntosh]] stereo audio amplifier with output power of 50 watts per channel used in home component audio systems in the 1970s.<ref>[https://www.hifi-wiki.de/index.php/McIntosh_MC_2505 HiFi-Wiki webpage with facsimile] of data sheet</ref>
  • Power amplifier by [[Skyworks Solutions]] in a [[Smartphone]].

Amplifier         
·noun One who or that which amplifies.
amplifier         
¦ noun
1. an electronic device for increasing the amplitude of electrical signals, used chiefly in sound reproduction.
2. a device of this kind combined with a loudspeaker, used to amplify electric guitars and other musical instruments.
amplifier         
(amplifiers)
An amplifier is an electronic device in a radio or stereo system which causes sounds or signals to get louder.
N-COUNT

Βικιπαίδεια

Amplifier

An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the power of a signal (a time-varying voltage or current). It is a two-port electronic circuit that uses electric power from a power supply to increase the amplitude (magnitude of the voltage or current) of a signal applied to its input terminals, producing a proportionally greater amplitude signal at its output. The amount of amplification provided by an amplifier is measured by its gain: the ratio of output voltage, current, or power to input. An amplifier is a circuit that has a power gain greater than one.

An amplifier can either be a separate piece of equipment or an electrical circuit contained within another device. Amplification is fundamental to modern electronics, and amplifiers are widely used in almost all electronic equipment. Amplifiers can be categorized in different ways. One is by the frequency of the electronic signal being amplified. For example, 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, and servo amplifiers and instrumentation amplifiers may work with very low frequencies down to direct current. Amplifiers can also be categorized by their physical placement in the signal chain; a preamplifier may precede other signal processing stages, for example. The first practical electrical device which could amplify was the triode vacuum tube, invented in 1906 by Lee De Forest, which led to the first amplifiers around 1912. Today most amplifiers use transistors.

Παραδείγματα από το σώμα κειμένου για amplifier
1. "The general rule of thumb should be that a 10,000 pound amplifier is ten times better than a 1,000 pound amplifier, but the truth is, it probably isn‘t.
2. It‘s so powerful, the output overdrives any amplifier.
3. That amplifier can cause naive investors no little harm, in both directions.
4. There‘s also a 100–watt digital amplifier and an 8–inch downward firing subwoofer.
5. CTVR‘s prototype uses a normal antenna and amplifier to receive a signal but differs fundamentally from traditional radio equipment.