telephone amplifier

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• telephone amplifier — telefono stiprintuvas statusas T sritis automatika atitikmenys: angl. telephone amplifier; telephone repeater vok. Fernsprechverstärker, m rus. телефонный усилитель, m pranc. amplificateur téléphonique, m …   Automatikos terminų žodynas

• telephone repeater — telefono stiprintuvas statusas T sritis automatika atitikmenys: angl. telephone amplifier; telephone repeater vok. Fernsprechverstärker, m rus. телефонный усилитель, m pranc. amplificateur téléphonique, m …   Automatikos terminų žodynas

• Amplifier — For other uses, see Amplifier (disambiguation). Generally, an amplifier or simply amp, is a device for increasing the power of a signal. In popular use, the term usually describes an electronic amplifier, in which the input signal is usually a… …   Wikipedia

• telephone — telephoner, n. /tel euh fohn /, n., v., telephoned, telephoning. n. 1. an apparatus, system, or process for transmission of sound or speech to a distant point, esp. by an electric device. v.t. 2. to speak to or summon (a person) by telephone. 3.… …   Universalium

• amplifier — /am pleuh fuy euhr/, n. 1. a person or thing that amplifies or enlarges. 2. an electronic component or circuit for amplifying power, current, or voltage. [1540 50; AMPLIFY + ER1] * * * Device that responds to a small input signal (voltage,… …   Universalium

• Headset (telephone/computer) — A headset is a headphone combined with a microphone. Used in call centers and by people in telephone intensive jobs, headsets provide the equivalent functionality of a telephone handset with hands free operation. Many people use headsets at the… …   Wikipedia

• Federal telephone excise tax — The federal telephone excise tax is a statutory federal excise tax imposed under the Internal Revenue Code in the United States under usc|26|4251 on amounts paid for certain communications services. The tax was to be imposed on the person paying… …   Wikipedia

• Electronic amplifier — A practical amplifier circuit An electronic amplifier is a device for increasing 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… …   Wikipedia

• Valve audio amplifier — A valve (UK) audio amplifier or vacuum tube (US) audio amplifier is a valve amplifier used for sound recording, reinforcement, or reproduction. Until the invention of solid state devices such as the transistor, all electronic amplification was… …   Wikipedia

• Negative feedback amplifier — Figure 1: Ideal negative feedback model A negative feedback amplifier (or more commonly simply a feedback amplifier) is an amplifier which combines a fraction of the output with the input so that a negative feedback opposes the original signal.… …   Wikipedia

• Crossed-field amplifier — A crossed field amplifier (CFA) is a specialized vacuum tube, first introduced in the mid 1950s and frequently used as a microwave amplifier in very high power transmitters. Raytheon engineer William C. Brown s work to adapt magnetron principles… …   Wikipedia