voltage-regulated power supply
71Orbiting Frog Otolith — A bullfrog (Rana catesbeiana), the species which travelled on the OFO A flight The Orbiting Frog Otolith (OFO) spacecraft …
72coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …
73Analog chip — An analog chip is a set of miniature electronic analog circuits formed on a single piece of semiconductor material. The circuits in analog chips operate with voltage and current varying in a continuous fashion; in contrast, digital chips only use …
74Altair 8800 — The MITS Altair 8800 was a microcomputer design from 1975, based on the Intel 8080 CPU and sold as a mail order kit through advertisements in Popular Electronics , Radio Electronics and other hobbyist magazines. The designers intended to sell… …
75Cahora Bassa — Infobox lake lake name = Cahora Bassa image lake = STS51B 51 14 Lake Cahora Bassa.jpg caption lake = A partial view of Cahora Bassa from space. image bathymetry = caption bathymetry = coords = coord|15|40|S|31|50|E|type:waterbody… …
76Valve 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… …
77GP2X — Infobox CVG system title = GP2X manufacturer = GamePark Holdings type = Handheld game console generation = Seventh generation era lifespan = November 10, 2005 CPU = Dual CPU:200 MHz Host ARM920T200 MHz ARM940T media = Secure Digital card The GP2X …
78Energy in Japan — Japan lacks significant domestic sources of fossil energy except coal and must import substantial amounts of crude oil, natural gas, and other energy resources, including uranium. In 1990 Japan s dependence on imports for primary energy stood at… …
79Phonograph — Turntable redirects here. For other uses, see Turntable (disambiguation). Edison cylinder phonograph ca. 1899 …
80Starlight Express — Infobox Musical name= Starlight Express subtitle= caption= 1987 Japan/Australia tour Logo music= Andrew Lloyd Webber lyrics= Richard Stilgoe Don Black David Yazbek book= Richard Stilgoe productions= 1984 West End 1987 Broadway 1987… …
