Brushless electronic tachometer measures rotational speed and rotational direction, maintaining accuracy at high or low speeds. Unit is particularly useful in vacuum environments requiring low friction.
Brushless tachometer gives speed and direction
NASA Tech Briefs ; 2 , 4
1977-03-01
Miscellaneous
No indication
English
Brushless Low-Speed dc Tachometer
NTRS | 1984
|Brushless Direct Current Tachometer Patent Application
NTIS | 1969
|Tachometer Derived From Brushless Shaft-Angle Resolver
Online Contents | 1995
Tachometer Derived From Brushless Shaft-Angle Resolver
NTRS | 1995
|Direction Sensing Tachometer System Put To Test
Automotive engineering | 1983
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