Sentence examples for thermionic valve from inspiring English sources
noun
An early electronic device incorporating electrons from a glowing cathode inside an evacuated glass tube, functioning as a switch, amplifier etc.
De Forest added a grid of fine wire between the cathode and anode of the two-electrode thermionic valve constructed by Fleming.
A decade later, he was a wireless equipment officer in the Royal Flying Corps, where the possibilities of the thermionic valve – which "has the power to shrink the world to the compass of a living room" – were being explored.
He is best remembered as the inventor of the two-electrode radio rectifier, which he called the thermionic valve; it is also known as the vacuum diode, kenotron, thermionic tube, and Fleming valve.
This discovery provided impetus for the development of electron tubes, including an improved X-ray tube by the American engineer William D. Coolidge and Fleming's thermionic valve (a two-electrode vacuum tube) for use in radio receivers.
A box in the diagram might be labelled (say) 'intermediate frequency amplifier' while remaining) neutral as to the exact circuit and whether the amplification is carried out by a thermionic valve or by a transistor.
Abbey Road was also the first and only Beatles album to be entirely recorded through a solid state transistor mixing desk, the TG Mk I, as opposed to earlier thermionic valve based desks.
Only pre-60s thermionic valves use full power on standby to keep their heater coils warm - unlike almost any equipment sold since the domestic introduction of the transistor in the 60s.
The Soviet Union went so far as to use robust thermionic valves instead of microcircuits to protect the most crucial electronic parts of its aircraft.Most of the damage done by a nuclear EMP is caused by the so-called E1 pulse the first of a high-altitude nuclear explosion's three electromagnetic components.
It contained 550 thermionic valves – 300 diodes and 250 pentodes – and had a power consumption of 3.5 kilowatts.
Using terminology of F. Jackson and P. Pettit (1988, pp. 381 400) the 'role state' would be given by 'amplifier', the 'realiser state' would be given by 'thermionic valve', say.
It was a thermionic grid-triode vacuum tube a three-element electronic "valve" similar to a two-element device patented by the Englishman Sir John Ambrose Fleming in 1905.
