valve oscillator
71tube — Synonyms and related words: Amtrak, L, Photronic cell, adjutage, amplifier, anode, attenuator, audio frequency tube, baggage train, ballast regulator, ballast tube, barrel, base, beam switching tube, bole, branch, cable railroad, cable railway,… …
72Flip-flop (electronics) — An SR latch, constructed from a pair of cross coupled NOR gates. Red and black mean logical 1 and 0 , respectively. In electronics, a flip flop or latch is a circuit that has two stable states and can be used to store state information. The… …
73Guglielmo Marconi — Born 25 April 1874(1874 04 25) Palazzo Marescalchi, Bologna …
74Radio-controlled model — A radio controlled model (or RC model) is a model that is steerable with the use of radio control. All types of vehicles imaginable have had RC systems installed in them, including cars, boats, planes, and even helicopters and scale railway… …
75Secondary emission — is a phenomenon where additional electrons, called secondary electrons, are emitted from the surface of a material when an incident particle (often, charged particle such as electron or ion) impacts the material with sufficient energy. The number …
76Screen grid — The screen grid is a grid introduced into a vacuum tube (thermionic valve) to greatly reduce the capacitance between two other parts of the electrode structure.In its simplest form, a screen grid is placed between the control grid and anode or… …
77History of computing hardware — Computing hardware is a platform for information processing (block diagram) The history of computing hardware is the record of the ongoing effort to make computer hardware faster, cheaper, and capable of storing more data. Computing hardware… …
78Tetrode — A tetrode is an electronic device having four active electrodes. The term most commonly applies to a two grid vacuum tube. It has the three electrodes of a triode and an additional screen grid which significantly changes its behaviour. Grids The… …
79Korg — Infobox Company company name = Korg 株式会社コルグ company company type = foundation = 1962 founder = Tsutomu Kato and Tadashi Osanai location = JPN key people = area served = industry = Electronics products = Keyboards, Electronic Organ services =… …
80Electronic keyboard — An electronic keyboard. An electronic keyboard (also called digital keyboard, portable keyboard and home keyboard) is an electronic or digital keyboard instrument. The major components of a typical modern electronic keyboard are: Musical keyboard …
