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Что (кто) такое VALVED - определение
Valved RF amplifiers; Valve RF Amplifier
![DRM}}]] broadcasts](https://commons.wikimedia.org/wiki/Special:FilePath/Two Siemens 20 Kw PEP Linear Amplifiers.jpg?width=200 "DRM}}]] broadcasts")
Valved
·adj Having a valve or valve; valvate.
Valve amplifier
![McIntosh]] MC240 from 1961 with exposed vacuum tubes](https://commons.wikimedia.org/wiki/Special:FilePath/Mcintosh-MC240-glow.jpg?width=200 "McIntosh]] MC240 from 1961 with exposed vacuum tubes")
TYPE OF ELECTRONIC AMPLIFIER
Tube amplifier; Tube Amp; Valved RF amplifers; Tube amp; Tube amplifiers; Valve amp; Vacuum tube amplifier; Valve amplifiers; Tube-amplifier; Vacuum-tube amplifier
A valve amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a signal. Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers in the 1960s and 1970s.
Apicoaortic Conduit
CARDIOTHORACIC SURGICAL PROCESS
Aortic Valve Bypass; Valved conduit
Apicoaortic Conduit (AAC), also known as Aortic Valve Bypass (AVB), is a cardiothoracic surgical procedure that alleviates symptoms caused by blood flow obstruction from the left ventricle of the heart. Left ventricular outflow tract obstruction (LVOTO) is caused by narrowing of the aortic valve (aortic stenosis) and other valve disorders.
Википедия
Valve RF amplifier
A valve RF amplifier (UK and Aus.) or tube amplifier (U.S.) is a device for electrically amplifying the power of an electrical radio frequency signal.
Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers during the 1960s and 1970s, initially for receivers and low power stages of transmitters, transmitter output stages switching to transistors somewhat later. Specially constructed valves are still in use for very high power transmitters, although rarely in new designs.
