Amplifier

Amplifier

Any electronic device designed to inrease the volume of sound.

Industry: Consumer electronics

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Amplifier

Noise floor

Consumer electronics; Amplifier

The level at which noise (hiss, hum, etc.) exists in an amplifier. Often used as a reference point in signal-to-noise ratios.

FET distortion

Consumer electronics; Amplifier

When overdriven, a FET exhibits distortion qualities more like those produced by a tube than most other types of transistors.

FET switching

Consumer electronics; Amplifier

Circuits containing FETs, which can be used to activate effects or perform channel-switching functions with low noise and low power consumption.

Filament

Consumer electronics; Amplifier

The heating element in an electron tube, also called the "heater". The filament heats the cathode to a very high temperature to boil off electrons, which are then collected by the plate. The ...

Philtre capacitors. The term used for the large capacitors used to philtre out the residual AC ripple in the power supply. The rectifier converts AC to pulsating DC, since it just allows current to ...

Fixed biassing

Consumer electronics; Amplifier

A method of biassing a tube or output stage by using a negative DC voltage on the grid with respect to the cathode. This name is sometimes confusing, because an amplifier may have a bias adjustment ...

Flatness

Consumer electronics; Amplifier

The peak-to-peak deviation from the nominal voltage in the passband of an amplifier. Flatness is typically measured in dB. For example, if an amplifier has a passband "ripple" of + 0.5dB, it is ...