oscillograph

oscillograph
oscillographic, /euh sil'euh graf"ik/, adj.oscillography /os'euh log"reuh fee/, n.
/euh sil"euh graf', -grahf'/, n. Elect.
a device for recording the wave-forms of changing currents, voltages, or any other quantity that can be translated into electric energy, as sound waves.
[1870-75; OSCILL(ATE) + -O- + -GRAPH]

* * *

      instrument for indicating and recording time-varying electrical quantities, such as current and voltage. The two basic forms of the instrument in common use are the electromagnetic oscillograph and the cathode-ray oscillograph; (cathode-ray oscilloscope) the latter is also known as a cathode-ray oscilloscope (q.v.), which, strictly speaking, is purely an indicating instrument, while the oscillograph can make permanent records.

      The operation of an electromagnetic oscillograph, like the operation of a d'Arsonval galvanometer, depends on the interaction of the field of a permanent magnet and a coil of wire through which an electric current is flowing.

      Some oscillographs are provided with a pen arm, attached to the coil, that traces an ink record on a moving paper chart. The most common device of this nature is the electrocardiograph, which employs a coil of fine wire with many turns and is used for studying heart action.

      The light-beam oscillograph has much less weight to move than does the pen-writing instrument and so responds satisfactorily to higher frequencies, about 500 Hz, or cycles per second, compared with 100 Hz for the pen assembly. It uses a coil to which a small mirror is attached. A beam of light is reflected from the mirror onto a photographic film moving at a constant speed. The cathode-ray oscillograph makes use of a sharply focused electron beam to display the relationship between variable quantities on a luminescent screen similar to that used in a television. It may be either a three- or a four-dimensional recording device, the latter being very versatile. Recording is by transfer of energy to a light-sensitive record, using either an optical-lens system or a fibre-optic faceplate. It can be employed at frequencies in the megahertz range.

* * *


Universalium. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Oscillograph — …   Wikipedia

  • oscillograph — n. 1. a device for making a record of the wave forms of fluctuating . [WordNet 1.5] …   The Collaborative International Dictionary of English

  • Oscillograph — Os cil*lo*graph, n. [L. oscillare to swing + graph.] (Elec.) An apparatus for recording or indicating alternating current wave forms or other electrical oscillations, especially of voltages or currents; it usually consists of a galvanometer with… …   The Collaborative International Dictionary of English

  • oscillograph — [ə sil′əgraf΄, äs′ə lōgraf΄] n. [< L oscillare, to swing + GRAPH] an instrument for displaying or recording in the form of a curve the instantaneous values of rapidly varying electrical quantities oscillographic adj …   English World dictionary

  • oscillograph — oscilografas statusas T sritis automatika atitikmenys: angl. oscillograph; oscilloscope vok. Oszillograf, m; Oszillograph, m; Oszilloskop, n rus. осциллограф, m pranc. oscillographe, m; oscilloscope, m …   Automatikos terminų žodynas

  • oscillograph — oscilografas statusas T sritis Standartizacija ir metrologija apibrėžtis Optinis arba elektroninis įtaisas elektrinių dydžių laikiniam kitimui stebėti arba registruoti. atitikmenys: angl. oscillograph vok. Oszillograph, m rus. осциллограф, m… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • oscillograph — oscilografas statusas T sritis chemija apibrėžtis Prietaisas elektrinių signalų kitimui stebėti ir registruoti. atitikmenys: angl. oscillograph rus. осциллограф …   Chemijos terminų aiškinamasis žodynas

  • oscillograph — oscilografas statusas T sritis fizika atitikmenys: angl. oscillograph vok. Oszillograph, m rus. осциллограф, m pranc. oscillographe, m …   Fizikos terminų žodynas

  • oscillograph with bifilar suspension — kilpinis oscilografas statusas T sritis Standartizacija ir metrologija apibrėžtis Oscilografas, kurio jautrusis elementas yra galvanometras. atitikmenys: angl. loop oscillograph; oscillograph with bifilar suspension vok. Schleifenoszillograph, m… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • oscillograph with electronic commutation — elektroninis perjungiamasis oscilografas statusas T sritis radioelektronika atitikmenys: angl. oscillograph with electronic commutation vok. Oszillograph mit elektronischer Umschaltung, m rus. осциллограф с электронным переключением луча, m pranc …   Radioelektronikos terminų žodynas

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”