vario-couplern.
/ˈvɛːrɪəʊkʌplə/ Obsolete.
A device, consisting of two unconnected coils, one inside the other, whose relative position can be altered to vary the mutual inductance between two circuits.
ΘΚΠ
the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > [noun] > coupler
coupler1914
vario-coupler1922
optocoupler1973
1922–3 T. Eaton & Co. Catal. Fall–Winter 401/4 Variocouplers, built up on black fibre cylinder, with taps, fitted with lugs.
1925 P. J. Risdon Crystal Receivers & Circuits ii. 21 A vario-coupler..is a sort of combination of a variometer and an ordinary tapped tuning inductance.
1937 Discovery Feb. 54/2 (in figure) Vario-coupler.
This entry has not yet been fully updated (first published 1933; most recently modified version published online December 2020).
<
n.1922- tone
- tone burst
- tone cluster
- tone control
- tone deafness
- tone dialling
- tone down
- tone generator
- tone language
- tone poem
- tone poet
- trade board
- trade body
- trade book
- trade boom
- trade bound
- trade box
- trade calico
- trade card
- trade coin
- trade corporation
- trade counter
- trade credit
- trade cumulus
- trade cycle