For Amplifier we have terms and definitions in 13 topics. The topics are Audio Recording, Audio Technology, Automotive, Beauty, Car Engine, Carpet, Explosives, Health and Beauty, Home Audio, Home Theater, Import Cars, Technology and Transistors.

Amplifier (Audio Recording)

A device which increases the amplitude or level of an electrical signal making the resultant sound louder.

Amplifier (Audio Technology)

A circuit or a device that increases the power of a signal. Preamplifier : A small signal amplifier that brings a signal or signals up to a common standard which is then further amplified, by far the most common version of this is the control amplifier but in modern usage the 2 are usually synonymous, but lots of specialised pre-amplification devices exist, a Head Amplifier and Phono Preamps are a good examples of this. Control amplifier : A device that acts as the control unit for an audio system, compromising of a number of pre-amplification circuits that interface units with specific output characteristics to a common standard and also allows the users to control which signal is sent to the amplifier and at what strength (i.e. volume). A control amplifier often also allows the user to perform householding tasks such as equalisation or other filtering, re-routing signals to a recording device and so on. In modern times all incoming and outgoing signals are line level which has given birth to a variant of the control amplifier called a line stage in which the device only features an input selector switch and a preamplifier section with volume control. Power amplifier : An amplifier that amplifies a signal to a degree that it can be used to drive a loudspeaker with, a power amplifier is almost invariably has a set amount of amplification so the loudness is controlled by the incoming signal which is typically a control amplifier or a similar preamp such as a mixer. Integrated amplifier : 1) A device that combines the functions of a control and power amplifier into a single unit. 2) A power amplifier built into a device that typically does not feature it such as a mixer or a loudspeaker, that case the device is often referred to as "Active" Passive pre/control amplifier/line stage Not an amplifier at all but a passive functional replacement for a control amplifier, basically you get a number of switches that allow you to choose between inputs and an attenuator, usually a variable resistor, a bank of switched resistors or a transformer, that allows you to control the strength of the signal that is delivered to the power amplifier and thus the volume coming out of the speakers. This sort of a design takes advantage of the fact that almost all modern audio and AV devices feature line level outputs and thus do not need amplification or equalisation prior to being sent to a power amp. There also exist minimal devises that have just an attenuator and no switching capabilities, these are useful only for systems with only one source component.

Amplifier (Automotive)

Electronic circuit that uses a small current to control a much larger current.

Amplifier (Beauty)

An amplifier works on the skin's surface and is designed to increase the absorption of UV light by the skin.

Amplifier (Car Engine)

Electronics that convert low level inputs to high level outputs.

Amplifier (Carpet)

A condition that encourages biopollutants to grow or increase in concentration. These conditions may involve food sources, temperature, light, air movement, moisture, etc.

Amplifier (Explosives)

Amplifier, a device in which a varying input signal controls a flow of energy to produce an output signal that varies in the same way but has a larger amplitude; the input signal may be a current, a voltage, a mechanical motion, or any other signal, and the output signal is usually of the same nature. The ratio of the output voltage to the input voltage is called the voltage gain. The most common types of amplifiers are electronic and have Transistors as their principal components. In most cases today, transistors are incorporated into Integrated Circuits chips. Most amplifiers include more than one transistor. Transistor amplifiers are used in Radio and Television transmitters and receivers, stereophonic record players, and intercoms.

Amplifier (Health and Beauty)

An amplifier works on the skin's surface and is designed to increase the absorption of UV light by the skin.

Amplifier (Home Audio)

A device, either by itself (power amplifier) or used in a component (integrated amplifier or receiver) which increases the amplitude of the voltage signal input to it and provides that powered original signal as an output.

Amplifier (Home Theater)

A component that increases the gain or level of an audio signal.

Amplifier (Import Cars)

A device consisting of one or more vacuum tubs, transistors, or magnetic devices and associated components to increase the strength of the applied signal.

Amplifier (Technology)

device that boosts the strength of an electronic signal; spaced at regular intervals throughout the system to keep signals picture-perfect regardless of the distance they must travel

Amplifier (Transistors)

A device which takes in a weak electric signal and sends out a stronger one. Amplifiers are used to boost electrical signals in many electronic devices, including radios, televisions, and telephones. Both vacuum tubes and transistors can be amplifiers, though today vacuum tubes are rarely used for this purpose.

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