Published Resources Details
Journal Article
- Title
- The quadrature and quadraflux tachometers
- In
- Journal of the Institution of Engineers, Australia
- Imprint
- vol. 11, no. 12, Dec 1939, pp. 417-419
- Description
This paper, No.685, originated in the Melbourne Division of The Institution, and was presented before the Electrical Engineering Branch of the Division on 4th July 1939. The author, Edward Byam, DSc ACGI AMIEAust, is Associate Professor of Electrical Engineering, University of Melbourne.
- Abstract
Two new forms of electrical tachometers are described in both of which a revolving field magneto generator is used in conjunction with an iron-cored indicating instrument so that there are no moving contacts in the electrical circuit. The indications of both forms of instrument are practically unaffected by variations of temperature.
In the first instrument described, the generator and indicator are combined in a unit, but in the second they may be separated by any desired distance. It is pointed out that the second form of instrument described has special advantages for indicating propeller speeds in large multi-engined aircraft, and that by means of a change over switch it may also be used as an indicator to show the exact synchronism of a number of engines.
