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gyrator
gy·rate G0329200 (jī′rāt′)intr.v. gy·rat·ed, gy·rat·ing, gy·rates 1. To revolve around a fixed point or axis.2. To move in a spiral or spirallike course. See Synonyms at turn.3. To oscillate or vary, especially in a repetitious pattern: Stock prices gyrated around last week's high.adj. Biology In rings; coiled or convoluted.
[Late Latin gȳrāre, gȳrāt-, from Latin gȳrus, circle; see gyre.]
gy′ra′tor n.gyrator (dʒaɪˈreɪtə) n (Electrical Engineering) an electronic circuit that inverts the impedanceGyrator
gyrator[′jī‚rād·ər] (electromagnetism) A waveguide component that uses a ferrite section to give zero phase shift for one direction of propagation and 180° phase shift for the other direction; in other words, it causes a reversal of signal polarity for one direction of propagation but not for the other direction. Also known as microwave gyrator. Gyrator a directional phase shifter, a microwave device. This device creates a half-wave phase change of electromagnetic waves propagating in opposite directions. Gyrators are used as a component in various microwave devices, such as gates, modulators, circulators, and switches. The operating principle of gyrators is based on the irreversible properties of magnetized ferrite; these properties cause rotations of polarization plane, phase shift, and so on. The simplest kind of gyrator consists of a circular radio waveguide that contains an appropriately dimensioned, magnetized ferrite rod (magnetized in a magnetic field of a previously determined intensity). A circular waveguide is coupled to a rectangular waveguide by matching transitions. REFERENCESGurevich, A. G. Ferrity na sverkhvysokikh chastotakh. Moscow, 1960.
Lax, B., and K. Batton. Sverkhvysokochastotnye ferrity i ferrimagnetiki. Moscow, 1965. (Translated from English.)B. E. LEVIN gypsum
gypsum [jip´sum] native calcium sulfate, which when calcined becomes plaster of paris; used in making plaster casts for fractures and for taking dental impressions.gyp·sum (jip'sŭm), The natural hydrated form of calcium sulfate; a component of the stones, plasters, and investments used in dentistry. [L. fr. G. gypsos] gyp·sum (jip'sŭm) The natural hydrated form of calcium sulfate used in dentistry. [L. fr. G. gypsos]gyp·sum (jip'sŭm) Natural hydrated form of calcium sulfate; component of stones, plasters, and investments used in dentistry. [L. fr. G. gypsos]ThesaurusSeegyrate |