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1 directly heated valve
directly heated valve direkt geheizte Röhre fEnglish-German dictionary of Electrical Engineering and Electronics > directly heated valve
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Valve amplifier — A valve amplifier or tube amplifier is a type of electronic amplifier that make use of vacuum tubes instead of solid state semiconductor devices (such as transistors). As any other electronic amplifier they serve to increase the power and/or… … Wikipedia
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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
Valve audio amplifier - technical — Circuitry and performance Characteristics of valves Valves are very high input impedance (near infinite in most circuits) and high output impedance devices. They are also high voltage / low current devices.While valves themselves are described… … Wikipedia
valve box — Steam Steam (st[=e]m), n. [OE. stem, steem, vapor, flame, AS. ste[ a]m vapor, smoke, odor; akin to D. stoom steam, perhaps originally, a pillar, or something rising like a pillar; cf. Gr. sty ein to erect, sty^los a pillar, and E. stand.] 1. The… … The Collaborative International Dictionary of English
valve chest — Steam Steam (st[=e]m), n. [OE. stem, steem, vapor, flame, AS. ste[ a]m vapor, smoke, odor; akin to D. stoom steam, perhaps originally, a pillar, or something rising like a pillar; cf. Gr. sty ein to erect, sty^los a pillar, and E. stand.] 1. The… … The Collaborative International Dictionary of English
Snifting valve — A snifting valve (sometimes snifter valve) is an automatic anti vacuum valve used in a steam locomotive when coasting. The word Snift imitates the sound made by the valve.When the driver shuts off the steam to the cylinders of a steam locomotive… … Wikipedia
Reversing valve — A reversing valve removed from an HVAC heat pump for replacement. A reversing valve a type of valve and is a component in a heat pump, that changes the direction of refrigerant flow.[1][2] … Wikipedia
Air valve — Air Air ([^a]r), n. [OE. air, eir, F. air, L. a[ e]r, fr. Gr. ah r, air, mist, for a[digamma]hr, fr. root a[digamma] to blow, breathe, probably akin to E. wind. In sense 10 the French has taking a meaning fr. It. aria atmosphere, air, fr. the… … The Collaborative International Dictionary of English
List of vacuum tubes — This is a list of vacuum tubes or thermionic valves. Before the advent of semiconductor devices, hundreds of tube types were used in consumer and industrial electronics; today only a few types are still used in specialized applications. Contents… … Wikipedia
Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… … Wikipedia