metadynen.

Brit.

/ˈmɛtədʌɪn/, U.S.

/ˈmɛdəˌdaɪn/

Forms: 1900s– metadyne, 1900s– métadyne. Frequently with capital initial.

Origin: A borrowing from French. Etymon: French métadyne.

Etymology: < French métadyne (J. M. Pestarini 1930, in Rev. gén. de l'électr. 27 355/1) < méta- meta- prefix + -dyne -dyne suffix.

A rotary direct-current generator used in position- and speed-control systems, in which the output voltage can be varied by a small signal applied to a control field perpendicular to the main field; also, this system or method. Frequently attributive.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > generator > [noun] > direct current generator

metadyne1930

Amplidyne1940

1930 Sci. Abstr. B. 33 376 The ‘Métadyne’ is a direct-current machine having more than two brush axes per pole-pair.

1945 Jrnl. Royal Aeronaut. Soc. 49 540/1 In recent years developments have taken place in quick response electrical systems having a high ratio of output power to input control, typical methods being known as the ‘Amplidyne’ or the ‘Metadyne’.

1951 F. J. Teago in P. Kemp Electr. Engin. III. 89/1 One of the chief reasons for using metadyne control is that the alternating current may be kept constant.

1970 J. Shepherd et al. Higher Electr. Engin. (ed. 2) xiv. 496 Metadyne generators are uncompensated or undercompensated cross-field generators.

1986 H. I. Andrews Railway Traction v. 110 The ‘Metadyne’ achieves a similar result with a single machine, and was long employed by the London Transport Executive on trains having frequent stops.

This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).

单词	metadyne
释义	metadynen. Brit. /ˈmɛtədʌɪn/, U.S. /ˈmɛdəˌdaɪn/ Forms: 1900s– metadyne, 1900s– métadyne. Frequently with capital initial. Origin: A borrowing from French. Etymon: French métadyne. Etymology: < French métadyne (J. M. Pestarini 1930, in Rev. gén. de l'électr. 27 355/1) < méta- meta- prefix + -dyne -dyne suffix. A rotary direct-current generator used in position- and speed-control systems, in which the output voltage can be varied by a small signal applied to a control field perpendicular to the main field; also, this system or method. Frequently attributive. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > generator > [noun] > direct current generator metadyne1930 Amplidyne1940 1930 Sci. Abstr. B. 33 376 The ‘Métadyne’ is a direct-current machine having more than two brush axes per pole-pair. 1945 Jrnl. Royal Aeronaut. Soc. 49 540/1 In recent years developments have taken place in quick response electrical systems having a high ratio of output power to input control, typical methods being known as the ‘Amplidyne’ or the ‘Metadyne’. 1951 F. J. Teago in P. Kemp Electr. Engin. III. 89/1 One of the chief reasons for using metadyne control is that the alternating current may be kept constant. 1970 J. Shepherd et al. Higher Electr. Engin. (ed. 2) xiv. 496 Metadyne generators are uncompensated or undercompensated cross-field generators. 1986 H. I. Andrews Railway Traction v. 110 The ‘Metadyne’ achieves a similar result with a single machine, and was long employed by the London Transport Executive on trains having frequent stops. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1930
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