amplifying tube
81Photodetector — Photosensors or photodetectors are sensors of light or other electromagnetic energy. There are several varieties:[1] Active pixel sensors are image sensors consisting of an integrated circuit that contains an array of pixel sensors, each pixel… …
82Clipping (audio) — For shortening of voice snippets due to failures in voice activity detection, see squelch and voice activity detection. The altered peaks and troughs of the sinusoidal waveform displayed on this oscilloscope indicate the signal has been clipped.… …
83Gain compression — in an electronic amplifier circuit is a reduction in differential or slope gain caused by nonlinearity of the transfer function of the amplifying device. This nonlinearity may be caused by heat due to power dissipation, or by overdriving the… …
84Distributed amplifier — Distributed amplifiers are circuit designs that incorporate transmission line theory into traditional amplifier design to obtain a larger gain bandwidth product than is realizable by conventional circuits. N stage traveling wave amplifier …
85Timeline of radio — The timeline of radio lists within the history of radio, the technology and events that produced instruments that use radio waves and activities that people undertook. Later, the history is dominated by programming and contents, which is closer… …
86percussion instrument — a musical instrument, as the drum, cymbal, triangle, xylophone, or piano, that is struck to produce a sound, as distinguished from string or wind instruments. [1870 75] * * * A musical instrument that is struck (or sometimes shaken or scraped) to …
87Armstrong, Edwin H. — ▪ American inventor Introduction in full Edwin Howard Armstrong born Dec. 18, 1890, New York, N.Y., U.S. died Jan. 31/, Feb. 1, 1954, New York City American inventor who laid the foundation for much of modern radio and electronic… …
88perciform — ▪ fish order Introduction any member of the order Perciformes, a group of bony fishes with more than 6,000 species placed in about 150 families. The order is the largest group of fishes in the world today. Perciform fishes occur in… …
89Electric current — Electromagnetism …
90Integrated circuit — Silicon chip redirects here. For the electronics magazine, see Silicon Chip. Integrated circuit from an EPROM memory microchip showing the memory blocks, the supporting circuitry and the fine silver wires which connect the integrated circuit die… …
