ratiometer
(reɪʃɪˈɒmɪtə(r))
[f. ratio + -meter.]
A device for measuring the ratio of two electrical quantities.
| 1925 R. O. Kapp G. Kapp's Transformers (ed. 3) ix. 220 The ratio of a transformer is tested by an apparatus known as a ratiometer. This is really an autotransformer of which the windings are so subdivided that any ratio within very fine limits is obtainable. 1942 Jrnl. Sci. Instruments XIX. 23/2 A suitable current ratiometer has been constructed..consisting of two coils on the same spindle maintained in a non-uniform field by a torsionless suspension. 1976 Physics Bull. Nov. 509/1 It has two amplifiers, phase sensitive detection or ‘lock-in’ and a ratiometer in one unit. |